Roman army of the mid-Republic x 700m = ca. 50 hectares). Along the perimeter, a ditch ("fossa") would be excavated, and the spoil used to build an earthen rampart ("agger") on the inside of the ditch. On top of the rampart was erected a palisade ("vallum") of cross-hatched wooden stakes with sharpened points. Within this precinct, a standard, elaborate plan was used to allocate space, in a pre-set pattern, for the tents of each of the various components of the army: officers, legionary infantry (split into "hastati", "principes" and "triarii") and legionary cavalry, Italian allied infantry and cavalry, "extraordinarii" and non-Italian allies. The idea was
Siege of Fort Erie contained a total of six guns. The dry ditch surrounding the fort had a high wooden wall in the centre. This wall was angled outwards and was sharpened to prevent any enemy from leaping into the ditch, which also had sharpened sticks placed up and down the walls to help impale or wound enemy soldiers. The ditch was used as a garbage dump and a sewer by the defenders, creating a slippery and smelly swamp at the base that would slow enemy attacks and would encourage disease in any wounds. The Americans had made significant improvements to the defenses of