Ancient Roman Frontier Defenses: Forts, Walls, and Their Purposes

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ROMAN FRONTIER DEFENSES


reconstruction of Roman fort at Vindolanda

Rome depended on a network of forts, walls and natural barriers to separate the empire from outsiders. Walls, military outposts and frontier cities were all types of fortifications that were employed. Seventy-three-mile-long Hadrian’s Wall’s in northern Britain is the most well-known of these fortification. The Antonine Wall, built of stone, turf and wood, was used to extend the frontier beyond Hadrian’s Wall in A.D. 142. Lambaesis was established as military fort in 81. It later served as army headquartered in North Africa. Dura-Europos was built where the Romans seized a city on a cliff above the Euphrates from Parthians in the second century A.D. [Source: Andrew Curry, National Geographic, September 2012 ]

On the northern frontiers, Germanic tribes often invaded towns near the borders. The Romans set up a chain of observation posts on the Rhine to guard the frontiers of the Roman empire, protect shipping, and give an early warning in the event of an attack. They were made from wood and stone and stood about five meters high. Surrounded by low walls, moats and sharp wooden stakes, they were set up between a 500 and 1,500 meters apart, close enough that towers could alert others in the chain in the event of trouble.

Diplomacy, trade and violence — and the fortifications — were all used maintain borders and keep the frontiers intact. Of the thousands of kilometers of frontier, only a small portion was protected by walls. They were mainly built to seal gaps between natural barriers such as mountains, deserts, rivers and sea. Troops were concentrated in fortresses, ultimately making the territory beyond them in the interior vulnerable. Over time, the barriers were breached and barbarian incursions led to the fall of the western part of the empire in the 5th century.

Andrew Curry wrote in National Geographic: “A stunning network of walls, rivers, desert forts, and mountain watchtowers marks Rome’s limits. At its peak in the second century A.D., the empire sent soldiers to patrol a front that stretched from the Irish Sea to the Black Sea as well as across North Africa.The question isn’t just academic. Defining and defending borders is a modern obsession too. As politicians have debated building a wall between the United States and Mexico and troops face off across the land-mine-strewn strip of ground between the two Koreas, the realities the Roman emperors faced are still with us. Understanding why the Romans were obsessed with their borders—and the role their obsession played in the decline of the empire—might help us better understand ourselves.

Websites on Ancient Rome: Internet Ancient History Sourcebook: Rome sourcebooks.fordham.edu ; Internet Ancient History Sourcebook: Late Antiquity sourcebooks.fordham.edu ; BBC Ancient Rome bbc.co.uk/history; Perseus Project - Tufts University; perseus.tufts.edu ; Lacus Curtius penelope.uchicago.edu; The Internet Classics Archive classics.mit.edu ; Bryn Mawr Classical Review bmcr.brynmawr.edu; Cambridge Classics External Gateway to Humanities Resources web.archive.org; Ancient Rome resources for students from the Courtenay Middle School Library web.archive.org ; History of ancient Rome OpenCourseWare from the University of Notre Dame web.archive.org ; United Nations of Roma Victrix (UNRV) History unrv.com

Roman Forts

"The Romans," historian John Keegan wrote, "dotted the landscape with the rectangular legionary forts that their soldiers were trained to throw up at the end of each day's march in hostile territory." The forts were remarkably similar in design to fortifications around Chinese cities. They had four gates and a central ceremonial area as well as baths and a kitchen. Larger more permanent forts had a central headquarters, a chapel for storing sacred weapons, rows of slate-roofed barracks, storage granaries, cookhouses and latrines with running water large enough to accommodate 20 men at one time. [Ibid, Timothy Foote, Smithsonian, April 1985]


Trajan's Column, an attack on a Roman fort

A typical fort had a wall with a main gate. A palisade around a kilometer square surrounded the fort . Near it was a tower. Villages houses were located outside the fort wall, Inside were the headquarters, commander’s residense barracks and workshops. Romans armies no the move carried prefabricated forts. They wall sections contained dovetail and cross-halving joints that allowed them to be quickly fitted together on site for instant defence.

Watchtowers were built by Roman soldiers along the 342 miles of frontier between the Rhine and Danube Rivers.Qasr Bashir, built around A.D. 300 in the edge of the desert in Jordan, is one the world’s best-preserved Roman forts. Home to 70 to 160 horsemen, the fort kept Arab nomads from harassing caravans carrying frankincense and myrrh.

In 2015, archaeologists working outside Trieste, Italy, announced that they had discovered what may be the oldest surviving Roman fortification system. Archaeology magazine reported: An interdisciplinary study used ground-penetrating radar, lidar, and archaeological survey to reveal three Roman forts — one large central camp and two minor outposts — that are the only Roman camps ever identified on Italian soil. The largest of the three, San Rocco, was strategically located across 32 acres of land, with outer and inner networks of ramparts. Dating to the beginning of the second century B.C., the camp predates the previous earliest known examples of Roman encampments, in Iberia. The fort was likely built to support Rome’s conquest of the Istrian Peninsula in 178–177 B.C., and would have been an essential resource in helping Rome secure its unstable borders against the native Celtic population. “These forts are very important in understanding the origins of Roman military architecture, the Roman conquest of the area, and also the origins of modern Trieste,” says Federico Bernardini of the International Center for Theoretical Physics. [Source: Jason Urbanus, Archaeology magazine, July-August 2015]

Roman Walls

Rome was a walled city. The best preserved Roman protective wall — which functioned like the Great Wall of China — still standing is Hadrian's Wall between England and Scotland. The Romans raised walls in Algeria, Tunisia and Libya to keep out nomadic Saharan raiders; in Jordan and Mesopotamia as a defense against Persians and Arabs; and in the Danube and the Rhine against European Celtic tribes and horsemen from the Central Asian steppe. [Source: "History of Warfare" by John Keegan, Vintage Books]

Major barriers included Hadrian’s Wall in Britain, the Germanic Lines (walls in Germany that extended 342 miles), Limes Transalutanus (60 miles of walls in Romania) and Fossatum Africae (152 miles in Algeria). Hadrian’s Wall, in England, probably the best known Roman defensive wall, was named a UNESCO World Heritage site in 1987. In 2005 UNESCO established a combined site with the 342-mile German frontier. Preservation experts hope to add sites in 16 other countries.

There were attacks or battles at these walls. Andrew Curry wrote in National Geographic: “If the walls weren’t under constant threat, what were they for? Ever since British antiquarians organized the first scientific excavations along Hadrian’s Wall in the 1890s, historians and archaeologists have assumed Rome’s walls were military fortifications, designed to fend off barbarian armies and hostile invaders. [Source: Andrew Curry, National Geographic, September 2012 ]

“For decades arguments focused on tactical details: Did soldiers stand along the wall to rain spears and arrows down on invaders or sally forth to engage the enemy in the field? The trenches of WWI—and the deadly back-and-forth battling of WWII—did little to change the prevailing view of the ancient frontier as a fixed barrier separating Rome from hordes of hostile barbarians.

“Archaeologists studying the frontiers in the 1970s and ’80s later found that the Iron Curtain dividing Europe had shadowed their view of the distant past. “We had in Germany this massive border, which seemed impenetrable,” says C. Sebastian Sommer, chief archaeologist at the Bavarian State Preservation Office. “The idea was here and there, friend and foe.” “Today a new generation of archaeologists is taking another look. The dramatic, unbroken line of Hadrian’s Wall may be a red herring, a 73-mile exception that proves an entirely different rule. In Europe the Romans took advantage of the natural barriers created by the Rhine and Danube Rivers, patrolling their waters with a strong river navy. In North Africa and the eastern provinces of Syria, Judaea, and Arabia, the desert itself created a natural frontier.

Roman Fortifications: Border Stations Rather Than Invasion Stoppers?

Andrew Curry wrote in National Geographic: “Military bases were often ad hoc installations set up to watch rivers and other key supply routes. The Latin word for frontier, limes (LEE-mess), originally meant a patrolled road or path. We still use the term: Our “limits” comes from limites, the plural of limes. [Source: Andrew Curry, National Geographic, September 2012 ]

“Outposts on rivers like the Rhine and Danube or in the deserts on Rome’s eastern and southern flanks often resemble police or border patrol stations. They would have been useless against an invading army but highly effective for soldiers nabbing smugglers, chasing small groups of bandits, or perhaps collecting customs fees. The thinly manned walls in England and Germany were similar. “The lines were there for practical purposes,” says Benjamin Isaac, a historian at Tel Aviv University. “They were the equivalent of modern barbed wire—to keep individuals or small groups out.”


Romans building a fort


“Isaac argues that the frontiers resembled certain modern installations more than thick-walled medieval fortresses: “Look at what Israel’s building to wall off the West Bank. It’s not meant to keep out the Iranian army, it’s made to stop people from exploding themselves on buses in Tel Aviv.” Warding off terrorists may not have motivated the Romans, but there were plenty of other factors— as there are today. “What the United States is planning between itself and Mexico is substantial,” says Isaac, “and that’s just to keep out people who want to sweep the streets in New York.”

“More archaeologists are endorsing that view. “Isaac’s analysis has come to dominate the field,” says David Breeze, author of the recent Frontiers of Imperial Rome. “Built frontiers aren’t necessarily about stopping armies but about controlling the movement of people.” The Roman frontier, in other words, is better seen not as an impervious barrier sealing Fortress Rome off from the world but as one tool the Romans used to extend influence deep into barbaricum, their term for everything outside the empire, through trade and occasional raids.

Roman Lines

According to UNESCO: “The ‘Roman Limes’ represents the border line of the Roman Empire at its greatest extent in the 2nd century AD. It stretched over 5,000 kilometers from the Atlantic coast of northern Britain, through Europe to the Black Sea, and from there to the Red Sea and across North Africa to the Atlantic coast. The remains of the Limes today consist of vestiges of built walls, ditches, forts, fortresses, watchtowers and civilian settlements. Certain elements of the line have been excavated, some reconstructed and a few destroyed. The two sections of the Limes in Germany cover a length of 550 kilometers from the north-west of the country to the Danube in the south-east. The 118-km-long Hadrian’s Wall (UK) was built on the orders of the Emperor Hadrian c. AD 122 at the northernmost limits of the Roman province of Britannia. It is a striking example of the organization of a military zone and illustrates the defensive techniques and geopolitical strategies of ancient Rome. The Antonine Wall, a 60-km long fortification in Scotland was started by Emperor Antonius Pius in 142 AD as a defense against the “barbarians” of the north. It constitutes the northwestern-most portion of the Roman Limes. [Source: UNESCO World Heritage sites website =]

“The Roman Empire, in its territorial extent, was one of the greatest empires history has known. Enclosing the Mediterranean world and surrounding areas, it was protected by a network of frontiers stretching from the Atlantic Coast in the west to the Black Sea in the east, from central Scotland in the north to the northern fringes of the Sahara Desert in the south. It was largely constructed in the 2nd century AD when the Empire reached its greatest extent. This frontier could be an artificial or natural barrier, protecting spaces or a whole military zone. Its remains encompass both visible and buried archaeology on, behind and beyond the frontier.”=


Romans using catapults in a siege of a walled city


The site “consists of three sections of the frontier: Hadrian’s Wall, the Upper German- Raetian Limes and the Antonine Wall, located in the northwestern part of the Empire, constituting the artificial boundaries of the former Roman provinces Britannia, Germania Superior and Raetia: Running 130 kilometers from the mouth of the River Tyne in the east to the Solway Firth, Hadrian’s Wall was built on the orders of the Emperor Hadrian in AD 122 as a continuous linear barrier at the then northernmost limits of the Roman province of Britannia. The frontier extended a further 36km down the Solway coast as a series of intervisible military installations. It constituted the main element in a controlled military zone across northern Britain. The Wall was supplemented by the ditch and banks of the vallum, supporting forts, marching camps and other features in a wide area to the north and south, linked by an extensive road network. It illustrates an ambitious and coherent system of defensive constructions perfected by engineers over the course of several generations and is outstanding for its construction in dressed stone and its excellent use of the spectacular upland terrain through which it passed. =

“The Upper German-Raetian Limes covers a length of 550 kilometers and runs between Rheinbrohl on the Rhine and Eining on the Danube, built in stages during the 2nd century. With its forts, fortlets, physical barriers, linked infrastructure and civilian architecture it exhibits an important interchange of human values through the development of Roman military architecture in previously largely undeveloped areas thereby giving an authentic insight into the world of antiquity of the late 1st to the mid-3rd century AD. It was not solely a military bulwark, but also defined economic and cultural limits. Although cultural influences extended across the frontier, it did represent a cultural divide between the Romanised world and the non-Romanised Germanic peoples. In large parts it was an arbitrary straight line, which did not take account of the topographical circumstances. Therefore, it is an excellent demonstration of the Roman precision in surveying. =

“The Antonine Wall was built under the Emperor Antoninus Pius in the 140’s AD as an attempt to conquer parts of northern Britain and extends for some 60 kilometers across central Scotland from the River Forth to the River Clyde. Through its military and civil constructions, it demonstrates cultural interchange through the extension of Roman technical skills, organisation and knowledge to the furthest reaches of the Empire. It embodies a high degree of expertise in the technical mastery of stone and turf defensive constructions. As it was in use for only a single generation, it provides a snapshot of the frontier at a particular point in time and offers a specific insight into how the frontier was designed and built. Together, the remains of the frontiers, consisting of vestiges of walls, ditches, earthworks, fortlets, forts, fortresses, watchtowers, roads and civilian settlements, form a social and historical unit that illustrates an ambitious and coherent system of defensive constructions perfected by engineers over the course of several generations. Each section of the property constitutes an exceptional example of a linear frontier, encompassing an extensive relict landscape which reflects the way resources were deployed in the northwestern part of the Empire and which displays the unifying character of the Roman Empire, through its common culture, but also its distinctive responses to local geography and climate, as well as political, social and economic conditions.” =


forts and walls in northern Britain


Historical Importance of the Frontiers of the Roman Empire

According to UNESCO: The site is important because: “1) The extant remains of the fortified German Limes, Hadrian’s Wall and Antonine Wall constitute significant elements of the Roman Frontiers present in Europe. With their forts, fortlets, walls, ditches, linked infrastructure and civilian architecture they exhibit an important interchange of human and cultural values at the apogee of the Roman Empire, through the development of Roman military architecture, extending the technical knowledge of construction and management to the very edges of the Empire.

They reflect the imposition of a complex frontier system on the existing societies of the northwestern part of the Roman Empire, introducing for the first time military installations and related civilian settlements, linked through an extensive supporting network. The frontiers did not constitute an impregnable barrier, but controlled and allowed the movement of peoples: not only the military units, but also civilians and merchants. Hence, they triggered the exchange of cultural values through movement of soldiers and civilians from different nations. This entailed profound changes and developments in the respective regions in terms of settlement patterns, architecture and landscape design and spatial organization. The frontiers still today form a conspicuous part of the landscape. [Source: UNESCO World Heritage sites website =]

2) “As parts of the Roman Empire’s general system of defense the German Limes, Hadrian’s Wall and the Antonine Wall have an extraordinarily high cultural value. They bear an exceptional testimony to the maximum extension of the power of the Roman Empire through the consolidation of its northwestern frontiers and thus constitute a physical manifestation of Roman imperial policy. They illustrate the Roman Empire’s ambition to dominate the world in order to establish its law and way of life there in a long-term perspective. They witness Roman colonization in the respective territories, the spread of Roman culture and its different traditions – military, engineering, architecture, religion management and politics – and the large number of human settlements associated with the defenses which contribute to an understanding of how soldiers and their families lived in this part of the Roman Empire. =

3) “The fortified German Limes, Hadrian’s Wall and the Antonine Wall are outstanding examples of Roman military architecture and building techniques and of their technological development, perfected by engineers over the course of several generations. They demonstrate the variety and sophistication of the Romans’ responses to the specific topography and climate as well as to the political, military and social circumstances in the northwestern part of the Empire which spread all around Europe and thereby shaped much of the subsequent development in this part of the world.” =



Hadrian's Wall

Emperor Hadrain (A.D. 76-138) ordered and oversaw the building of Hadrian’s Wall near the present-day border between Scotland and England to protect the unstable British provinces from fierce tribes such as the Caledonians, Picts and "Raiding Scots" in present-day Scotland. Hadrian's Wall was a Roman frontier built between A.D. 122 and 130. Running for 117 kilometers (73 miles) between Wallsend-on-Tyne in the east to Bowness on the Solway Firth in the west, it makes use of ridges and crags, particularly Whin Sill, and offers goods view to the north. A deep ditch reinforced some parts of it. Other parts were built on the top of cliffs.

Probably largely built by Roman troops and slaves, Hadrian’s Wall is the most lasting and famous monument left behind by the Romans in Britain and remains a powerful symbol of Roman rule. Stretching from the North Sea near the east coast town of Newcastle to the Irish Sea near Carlisle in the west, the 2000-year-old wall snakes through treeless valleys and over bluffs in a land as big as the sky. The 12 best preserved miles of the wall are located in Northumberland National Park where hills gently rise and fall like waves in a calm sea.

Andrew Curry wrote in National Geographic: “That “outermost island” was where Hadrian built the monument that bears his name, a rampart of stone and turf that cut Britain in half. Today Hadrian’s Wall is one of the best preserved, well-documented sections of Rome’s frontier. Remnants of the 73-mile barrier run through salt marshes, across green sheep pastures, and for one bleak stretch not far from downtown Newcastle, alongside a four-lane highway. Miles of it are preserved aboveground, lining crags that rise high above the rain-swept countryside. [Source: Andrew Curry, National Geographic, September 2012 ]

“More than a century of study has given archaeologists an unparalleled understanding of Hadrian’s Wall. The wall, perhaps designed by Hadrian himself on a visit to Britain in 122, was the ultimate expression of his attempt to define the empire’s limits. In most places the stone wall was an intimidating 14 feet tall and 10 feet wide. Traces of a 9-foot-deep ditch running the length of the wall are still visible today. In the past few decades excavations have uncovered pits filled with stakes between ditch and wall, one more obstacle for intruders. A dedicated road helped soldiers respond to threats. Regularly spaced gates were supported by watchtowers every third of a mile.”

Vindolanda and Roman Forts Near Hadrian’s Wall


Vindolanda ruins

Situated a few miles behind Hadrian’s Wall was a string of forts, evenly spaced a half a day’s march apart. Each fort could house between 500 and 1,000 men, capable of responding quickly to any attacks. Housesteads Roman Fort is one the best preserved forts in the country. Located on a high ridge. It covers an area of five acres. Within its walls are a number of buildings including the fort's headquarters and commander's house, granaries, barracks, a hospital, and latrines. |::|

Vindolanda was a Roman auxiliary fort just south of Hadrian's Wall in northern England. Archaeological excavations of the site show it was occupied by the Romans roughly from A.D. 85 to 370. Artifacts found b archaeologists have included Roman boots, shoes, armour, jewelry and coins. Perhaps the most interesting discovery has been the Vindolanda tablets, which contains letters and notes by soldiers stationed there, found in a waterlogged trash pile.

Vindolanda fort embraced a wall and gatehouse. Located south of Hadrian's Wall, it was surrounded by a settlement. As well as providing protect Roman forts near the wall attracted settlement and some local trade. According to to the BBC: “Sixteen forts were built on or near the Wall: each was different, with no standard interior plan. Archaeological evidence suggests that the forts were built after the Wall had been laid out and constructed. The forts were designed to house the soldiers that patrolled the Wall, although historians disagree about the numbers who were stationed there.” [Source: BBC |::|]

Ancient Roman 'Spike Defenses' Made Famous by Julius Caesar Found in Germany

In February 2023, archaeologists announced that they had found Roman-era wooden spikes like the kind used by Caesar preserved in the damp soil in the Bad Ems area of Germany. Kristina Killgrove wrote in Live Science: In 52 B.C., Julius Caesar used an ingenious system of ditches and stakes to defend his soldiers from an encroaching Gallic army in modern-day central France. More than two millennia later, archaeologists have discovered the first preserved example of similar defensive stakes, which likely protected an ancient silver mine. A student team made the unprecedented discovery in the area of Bad Ems, halfway between the present-day cities of Bonn and Mainz in Germany, on the former northern border of the Roman Empire. [Source: Kristina Killgrove, Live Science, February 28, 2023]

Archaeologists have been working in the area of Bad Ems since the late 19th century. Early excavations yielded processed silver ore along with wall foundations and metal slag, so researchers believed that they comprised smelting works dating to the early second century A.D. But in 2016, a hunter noticed odd crop formations and told archaeologists at Goethe University, who later found that the area hosted a 20-acre (8 hectares) double-ditched Roman camp with the remains of around 40 wooden watchtowers.

In 2023, the student team led by Frederic Auth unearthed the preserved wooden spikes in the damp soil of Blöskopf Hill, which held a second recently discovered Roman camp 1.3 miles (2 kilometers) away from the first fort. The team also found a coin from A.D. 43, proving that the two forts significantly pre-dated a larger system of fortifications known as the "limes" that was constructed in A.D. 110. The limes (meaning "boundary line") was the fortified border wall that ran along the northern Roman Empire.

The ancient Roman historian Tacitus offered clues to what the two forts were defending: He noted that a Roman governor named Curtius Rufus tried to mine silver in this area in A.D. 47, but found little. In reality, Bad Ems had plenty of silver — around 200 tons of it were found centuries later — but the Romans did not dig deep enough to get to it. It is possible that the Romans set up camp to defend themselves from raids as they tried to mine this important raw material, the archaeologists said.

While Julius Caesar died long before the forts at Bad Ems were set up, his strategy of creating a ditch-and-spike defensive system outlived him. In his book "Gallic Wars," Caesar wrote about the fortifications he set up in the Battle of Alesia in France in 52 B.C. He wanted his camp to be defended by as few soldiers as possible, so he cut down very thick branches, sharpened them to a point, and sank them into trenches, fastening them firmly at the bottom and covering the ditch with willow branches and twigs. "Whoever entered within them were likely to impale themselves on very sharp stakes," Caesar wrote.

In spite of the well-preserved finds at Bad Ems, mysteries remain surrounding the forts' use. The larger fort was never fully completed, and both forts appear to have been purposefully burned down a few years after their construction. Further research is needed to determine whether the researchers' hypothesis about the forts defending silver mines is correct, Markus Scholz, a professor of Roman archaeology at Goethe University, said in a statement.

Settlement Built on Roman Military Fort

In 2015, archaeologists said the remnants of ancient water wells, pearls and hairpins found on top of a Roman fort was proof that villagers set up a settlement on top of the military fort after it was abandoned. Laura Geggel wrote in Live Science: “About 1,900 years ago, a group of Roman soldiers lived in a fort in what is now Gernsheim, a German town located on the Rhine River about 31 miles (50 kilometers) south of Frankfurt. Shortly after the soldiers left the fort in about A.D. 120, another group of people moved in and built a village literally on top of the settlement, researchers found. "We now know that from the first to the third century, an important villagelike settlement, or 'vicus,' must have existed here," dig leader Thomas Maurer, an archaeologist at the University of Frankfurt, said in a statement. [Source: Laura Geggel, Live Science, September 18, 2015]

“After excavating the fort last year, the researchers returned this summer to look for evidence of the Roman settlement. Their efforts paid off: They found relics of the village, part of it built on the foundations of the fort.. Researchers have found the well-preserved foundation of a stone building, fire pits, at least two wells and some cellar pits. They've also found ceramic shards, which they plan to date to get a better grasp of the village's active periods. "We've also found real treasures, such as rare garment clasps, several pearls, parts of a board game (dice, playing pieces) and a hairpin made from bone and crowned with a female bust," Maurer said in the statement.


metal tips from catapult projectiles found in Germany

“Though they built their settlement over part of the fort, the villagers likely knew the soldiers, the researchers said. In fact, the villagers were likely the soldiers' family members and tradespeople who made a business trading with the military. "A temporary downturn probably resulted when the troops left — this is something we know from sites which have been studied more thoroughly," Maurer said. But the little village managed to prosper after the soldiers left, as stone buildings were built in the second century A.D., during the Pax Romana, a 206-year period with relatively few conflicts in the Roman Empire.

“The inhabitants likely had Gallic-Germanic origins, but a few "true" Romans — people with Roman citizenship who had moved from distant provinces — lived there as well, the researchers said. They based this idea on several tidbits of evidence, including pieces of traditional dress and coins found there. One coin is from Bithynia, in northwest Anatolia (modern-day Turkey), which may have been a souvenir from someone's travels, they said.

“The Roman fort once housed about 500 soldiers, who lived there between about A.D. 70 and 120, the researchers said. When the soldiers left, they dismantled the fort and filled in the ditches with dirt and everyday bric-a-brac, much to the delight of the archaeologists excavating the site. Rome made the fort and settlement to expand its infrastructure and help it take possession of large areas east of the Rhine River in about A.D. 70, the researchers said. During that time, the fort and settlement were fairly accessible by roads. It may have even had a harbor.

Dura-Europos

Dura-Europos was a Roman garrison town on the Euphrates River in modern Iraq. Called Europos by the Greeks and Dura by the Romans, it was near the frontier fought over by Romans and The eastern frontier of the Roman Empire became a particularly dangerous place when Persians under a new dynasty, the Sasanians, overthrew Rome's old foe, the Parthians in A.D. 224. They were more aggressive than the Parthians had ever been for they dreamed of restoring the Old Persian Empire that Alexander the Great had overthrown. Dura-Europos was discovered during World War I, and in 1931 excavations got underway under the auspices of Yale University.

Andrew Curry wrote in National Geographic: “Today Dura sits about 25 miles from the Syrian border with Iraq, an eight-hour bus ride through the desert from Damascus. It first came to light in 1920, when British troops fighting Arab insurgents accidentally uncovered the painted wall of a Roman temple. A team from Yale University and the French Academy put hundreds of Bedouin tribesmen to work with shovels and picks, moving tens of thousands of tons of sand with the help of railcars and mine carts. “At times it was like the Well of Souls scene from Indiana Jones,” says University of Leicester archaeologist Simon James. [Source: Andrew Curry, National Geographic, September 2012 ]

“Ten years of frenzied digging uncovered a third-century Roman city frozen in time. Fragments of plaster still cling to mud-brick and stone walls, and the rooms of palaces and temples—including the world’s oldest known Christian church—are tall enough to walk through and imagine what they looked like when they had roofs.

“Founded by Greeks around 300 B.C., Dura was conquered by the Romans nearly 500 years later. Its tall, thick walls and perch above the Euphrates made it a perfect frontier outpost. The northern end was walled off and turned into a Roman-era “green zone” with barracks, an imposing headquarters for the garrison commander, a redbrick bathhouse big enough to wash the dust off a thousand soldiers, the empire’s easternmost known amphitheater, and a 60-room palace suitable for dignitaries “roughing it” in the hinterlands.

“Just as Hadrian’s Wall shows the Roman frontier at its strongest, an abandoned fortress on the Euphrates River vividly captures the moment the borders began to collapse. Duty rosters show at least seven outposts reported to Dura. One of the outposts was staffed by just three soldiers; another lay nearly a hundred miles downstream. “This was not a city under constant threat,” James told me.“Soldiers here were probably busier policing the locals than defending against raids and attacks.”

Fall of Dura-Europos to the Persian Sasanians


Adonis Synagogue at Dura Europa

Andrew Curry wrote in National Geographic: “The quiet didn’t last. Persia emerged as a major threat along the empire’s eastern border a half century after the Romans seized Dura. Beginning in 230, war between the rivals raged across Mesopotamia. It was soon clear the frontier strategy that had served Rome for more than a century was no match for a determined, sizable foe. Dura’s turn came in 256. Working with a Franco-Syrian team of archaeologists interested in the site’s pre-Roman history, James has spent ten years unraveling the walled city’s final moments. He says the Romans must have known an attack was imminent. They had time to reinforce the massive western wall, burying part of the city—including the church and a magnificently decorated synagogue—to form a sloping rampart. [Source: Andrew Curry, National Geographic, September 2012 ]

“The Persian army set up camp in the city cemetery, a few hundred yards from Dura’s main gate. As catapults lobbed stones at the Romans, the Persians built an assault ramp and dug beneath the city, hoping to collapse its defenses. Dura’s garrison struck back with tunnels of their own. As fighting raged on the surface, James says, a squad of 19 Romans broke through into a Persian tunnel. A cloud of poison gas, pumped into the underground chamber, suffocated them almost instantly. Their remains are some of the oldest archaeological evidence of chemical warfare. James believes the bodies, found 1,700 years later, stacked in a tight tunnel, were used to block the tunnel while the Persians set it on fire.

“The Persians failed to topple Dura’s wall but eventually succeeded in taking the city, which was later abandoned to the desert. Surviving defenders were slain or enslaved. Persian armies pushed deep into what had been Rome’s eastern provinces, sacked dozens of cities, and overpowered two emperors before capturing a third, the hapless Valerian, in 260. The Persian king, Shapur, reportedly used Valerian as a footstool for a while, then had him flayed and nailed his skin to a wall.

“The crisis was a turning point. Around the time Dura fell, the careful balance of offense, defense, and sheer intimidation along the frontier fell apart.For nearly 150 years the border had helped Rome ignore a painful reality: The world beyond the walls was catching up, in part thanks to the Romans themselves. Barbarians who served in the Roman army brought back Roman knowledge, weapons, and military strategy, says Michael Meyer, an archaeologist at Berlin’s Free University.”

Cold War Satellite Images Reveal Nearly 400 Roman Forts in the Middle East

A total of 396 previously unknown Roman forts were exposed in modern-day Syria and Iraq through examination declassified Cold War-era satellite imagery. Ben Turner wrote in Live Science: The Researchers already knew about a series of forts — spanning roughly 116,000 square miles (300,000 square kilometers) from the Tigris River in modern-day Iraq to the plains of the Euphrates River in Syria — that were once thought to belong to a north-south border wall that separated the Romans from the rival empire of Persia. [Source Ben Turner, Live Science October 27, 2023]

But the distribution, from east to west, of the newfound forts along with those previously known ones, hints that they were built to facilitate peaceful trade and travel. The study, published October 26 2023, in the journal Antiquity, refutes a 1934 hypothesis by the French archaeologist and Jesuit priest Antoine Poidebard that the eastern fortifications were built to repel invaders. "Since the 1930s, historians and archaeologists have debated the strategic or political purpose of this system of fortifications," lead study author Jesse Casana, a professor of anthropology at Dartmouth College, said in a statement. "But few scholars have questioned Poidebard's basic observation that there was a line of forts defining the eastern Roman frontier."

Stretching across the deserts of Iraq and Syria, Poidebard discovered 116 of the second and third century A.D. forts after taking aerial photographs in the 1920s and 1930s. Looking at their placement from his biplane, which he learned to fly during World War I, Poidebard hypothesized that the square-shaped strongholds created a north-south defensive line that drove back raids from Parthians and later the Sassanid Persians.

Until now, Poidecard's hypothesis was widely accepted by historians. But after analyzing high-resolution images of the region taken by spy satellites in the 1960s and 1970s, the researchers discovered 396 previously unknown forts or fort-like buildings that were sprinkled widely from east to west. This suggests the border was more fluid than first thought, with the outposts existing not along the border but through it — protecting trade caravans as they ferried people and goods between Rome and the neighboring Parthian (later Sassanid Persian) Empire. The archaeologists say this raises an important question about the border: "Was it a wall or a road?" The findings suggested that the forts were used to "support movement of people, goods, and military assets between east and west," Casana told Business Insider.[Source: Nathan Rennolds, Business Insider, October 29, 2023]

According to CNN The research team pored over the images for signs of Roman forts, which have a distinctive square shape and walls that usually measure about 164 to 262 feet (50 to 80 meters) long. The forts spanned an area, “extending from Mosul, on the Tigris River in Iraq, through Ninawa province, across the Khabur and the Balikh valleys, continuing to the semi-arid plains west of the Euphrates River, leading to western Syria and the Mediterranean.” While Poidebard’s row of forts along the Roman Empire’s eastern front looked like a military fortification, this new evidence suggested that the forts collectively served a different purpose. Rather than presenting an impassable wall on a violent frontier, they provided oases of safety and order along well-traveled Roman roads. [Source: Mindy Weisberger, CNN, October 25, 2023]

Image Sources: Wikimedia Commons

Text Sources: Internet Ancient History Sourcebook: Rome sourcebooks.fordham.edu ; Internet Ancient History Sourcebook: Late Antiquity sourcebooks.fordham.edu ; “Outlines of Roman History” by William C. Morey, Ph.D., D.C.L. New York, American Book Company (1901) ; “The Private Life of the Romans” by Harold Whetstone Johnston, Revised by Mary Johnston, Scott, Foresman and Company (1903, 1932); BBC Ancient Rome bbc.co.uk/history/ ; Project Gutenberg gutenberg.org ; Metropolitan Museum of Art, National Geographic, Smithsonian magazine, New York Times, Washington Post, Los Angeles Times, Live Science, Discover magazine, Archaeology magazine, Reuters, Associated Press, The Guardian, AFP, The New Yorker, Wikipedia, Encyclopædia Britannica, Encyclopedia.com and various other books, websites and publications.

Last updated November 2024


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