Ancient Romans Built 'Marching Camps' Daily

From the late 3rd century bc to the 3rd century ad, Roman troops on campaign built a defended camp at their resting place each night. Carefully detailed and prearranged in their location and manner of construction, these bivouac sites were made to accommodate the headquarters, personnel, animals, baggage, and camp followers of whatever military-sized formation was to be housed within. Today, a camp of this nature is referred to by historians as a Roman marching-camp.
e time of the Romans is there recorded such an extensive use of fortified positions. Very seldom does the literature of the classical Greeks mention camps. Xenophon describes the camps of the Lacedaemonians as being maintained in good order and made circular when the terrain permitted. He does not indicate, however, whether they were regularly fortified. Even in the case of Alexander the Great and his successors, the strengthening of a camp is only touched upon under special circumstances, the implication being that it was not done otherwise. Supporting this contention is a passage by the ancient historian Polybius expressly stating that the Greeks, in order to save themselves the trouble of entrenching, sought out terrain with natural protection for their campsites.