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
Electric fence shock an unsuspecting human passer-by who might accidentally touch or brush the fence. Many fences are made entirely of standard smooth or high-tensile wire, although high quality synthetic fencing materials are also beginning to be used as part of permanent fences, particularly when visibility of the fence is a concern. Conventional agricultural fencing of any type may be strengthened by the addition of a single electric line mounted on insulators attached to the top or front of the fence. A similar wire mounted close to the ground may be used to prevent pigs from excavating beneath other fencing. Substandard conventional