The encampments for the night (hápu) were round-shaped, every man lying in contiguity to another in a circle, and leaving only a small issue, which was guarded by the commander. After the commander's signal no one was allowed to move from his place. The same order was observed when the army halted during the day, and the same arrangement is conspicuous in the campings of the Southern Dakota tribes, as Iowa, Ponka, Ugá�pa, etc.