§5.42.1Ab hac spe repulsi Nervii vallo pedum IX et fossa pedum XV hiberna cingunt.
Repulsed from this hope, the Nervii surround the winter quarters with a rampart of nine feet [in height] and a ditch of fifteen feet [in width].
§5.42.2Haec et superiorum annorum consuetudine ab nobis cognoverant et, quosdam de exercitu habebant captivos, ab eis docebantur; §5.42.3sed nulla ferramentorum copia quae esset ad hunc usum idonea, gladiis caespites circumcidere, manibus sagulisque terram exhaurire nitebantur.
They had learned these things both from their association with us in former years, and they were taught them by some prisoners whom they had from our army; but because there was no supply of iron tools which was suitable for this use, they strove to cut the sods with their swords, and to carry out the earth with their hands and military cloaks.
§5.42.4Qua quidem ex re hominum multitudo cognosci potuit: nam minus horis tribus milium pedum XV in circuitu munitionem perfecerunt §5.42.5reliquisque diebus turres ad altitudinem valli, falces testudinesque, quas idem captivi docuerant, parare ac facere coeperunt.
Indeed from this circumstance, the vast number of the men could be learned; for in less than three hours they completed a fortification of fifteen thousand feet in circumference; and in the remaining days they began to prepare and construct towers to the height of the rampart, falces, and testudines, which the same prisoners had taught them.