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Calceus Herculis
About
Ad Calceum Herculis guarded the narrow gorge at El Kantara, a passage only 40 meters wide between walls rising 120 meters, where the road from Lambaesis to Thubunae crossed into the pre-Saharan plains. Legio III Augusta opened this road in the first century CE and posted a garrison at the crossing alongside two sister outposts, Duo Flumina and Ad Aquas Herculis. By the second century the bridge and gorge were held by Syrian archer auxiliaries rather than legionaries. The gorge's dramatic cliffs gave the post its Roman name, the Heel of Hercules.
What happened here
Five hundred men, sometimes a thousand, recruited from a province rather than from citizens, and often stationed a long way from where they were raised. Cavalry units get a bigger fort and far more stabling; the smell tells you which kind you are in before the plan does. The layout copies a legionary fortress at a quarter of the size — headquarters, commander's house, granaries, barracks, a bath house usually built outside the walls because of the fire risk. Duties are patrolling, escorting, customs, and policing rather than pitched battle. After twenty-five years a man is discharged with citizenship for himself and his children, recorded on a bronze diploma he keeps for life. A village grows outside the gate within a decade.
Sources
Nearby
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