overpowered by numbers, they then either march off in the night with great silence, or by some stratagem delude their enemies. If they retire in the day-time, they do it in such order that it is no less dangerous to fall upon them in a retreat than in a march. They fortify their camps with a deep and large trench; and throw up the earth that is dug out of it for a wall; nor do they employ only their slaves in this, but the whole army works at it, except those that are then upon the guard; so that when so many hands are at work, a great line and a strong fortification is finished in so short a time that it is scarce credible.

Their armour is very strong for defence, and yet is not so heavy as to make them uneasy in their marches; they can even swim with it. All that are trained up to war practise swimming.