Catapult from the Roman military system. The Roman army was divided into legions, each of which contained about 6,000 men, although at first the number was much smaller. Each legion was in turn subdivided into ten cohorts. Besides the legionary soldiers, the army comprised bodies of auxiliar troops from the provinces or the allies of Rome. The common weapons were the pilum, or javelin, and a short sword, but slings and bows were also used.-Colby, 1899