The Contextual Guide and Internet Index to Western Civilization
Ever since Julius Caesar led his army into Rome and made himself military dictator, Roman emperors have relied on the military to secure their position and enforce their will. Not one to hide his light under a bushel, the 76-year old Caesar Augustus (Julius Caesar's adopted son) boasted of having used the military to impose a pax Romana (Roman peace) on much of the Western world.
Augustus' grandson Claudius extended the Empire to Britain and granted Roman citizenship to qualified persons from any part of the Empire, an Empire that reached its height during the reigns of the "five good emperors" (i.e., Nerva, Trajan, Hadrian, Antoninus Pius, Marcus Aurelius). In the 2nd century A.D. there were 3 legions in Britain, 1 in Spain, 4 along the Rhine, 11 along the Danube, 9 in the Near East and 2 in North Africa. Roman legions defended the imperial frontiers from the Scottish border to the deserts of Arabia, from the Danube to the Atlas mountains in northern Africa.
The imperial army consisted of some 300,00 men, half of whom made up the legions or units that carried eagles as their standard. There were c.28 legions, with an average strength of 5000, each made up of 10 cohorts of c.500 men. Cohorts were divided into 6 centuries, each numbering c.80 men under the command of a centurion. Almost all infantry troops were recruited from the citizenry. (Generally, 100 to 200 of the troops were cavalrymen.) Auxiliary units of colonial troops drawn from the provinces backed up the legions. The auxiliary soldiers, who drew less than half the pay of the legionaries, were granted citizenship on their discharge.
A legionary was protected by wooden shield, iron helmet and coat of iron mail and armed with "pilum" or javelin that he hurled when closing in on the enemy and a "gladius" or short sword used at close combat.
During the many interludes of peace in the first two centuries of the empire, the well-trained troops labored on public works, e.g., building and repairing bridges, aqueducts and the great network of roads, all of which proverbially led to Rome.
The most prestigious (and best paid!) troops served in the praetorian guard, the legion formed to protect the emperor. Caesar Augustus established this special guard, consisting of 9 elite cohorts, each consisting of c.500 men and based in Rome with the sole function of protecting the emperor. In 193 A.D. the praetorians assassinated Pertinax and declared that the throne would be auctioned off to whoever offered them the biggest bonus. The winner, Didius Julianus, was promptly overthrown after a reign of 66 days by Septimius Severus (the first Roman emperor of North African origin), who promptly killed the praetorians who had assassinated Pertinax and dismissed and exiled the remainder of the praetorian guard.
Josephus wrote admiringly of the legionaries' excellence. "Their perfect discipline welds the whole into a single body; so compact are their ranks, so alert their movements in wheeling, so quick their ears for orders, their eyes for signals, their hands for tasks."
Ranking of Soldiers
Of all Roman emperors, Marcus Aurelius took the most "hands on" approach in military affairs. Traveling from camp to camp on the far-flung frontiers, he personally led his armies and even found time between battles to write his famous Meditations. Rome's standing army remained unequaled for centuries.
The Romans were especially expert at clever and speedy field maneuvers and the ancient art of siege warfare. Ramps, scaling ladders, mobile assault towers with galleries for archers, crossbowmen, stone slingers and javelin hurlers, giant catapults called "ballistas" or "onagers" capable of flinging projectiles 2000 feet or more and smaller catapults or "scorpios" capable of hurling heavy rocks or bags of small stones or iron darts (i.e., the ancient equivalent of shrapnel) were all part of their amazing bellicose weaponry.
The soldiers methodically built fortified camps at the end of each day's march to protect against surprise attacks and serve as a refuges in case of defeat. The soldiers were so good that the Romans even found them to be their best weapon at sea: they equipped their galleys with a combination grappling hook/gangplank which both snared the enemy and enabled the infantry to board. With these tactics and the best siege techniques of the ancient world the Romans were able to best enemies ranging from Macedonian phalanx to barbarian hordes, the Carthaginian navy to the fortress of Alesia.
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