[1249]. Avoiding old camp sites. The occupation of old camp sites is dangerous, since these are often permeated by elements of disease which persist for considerable periods.

[1250]. Changing camp sites. Camp sites must be changed promptly when there is evidence of soil pollution or when epidemic disease threatens. Also, a change of camp site is often desirable in order to secure a change of surroundings and to abandon areas that have become dusty and cut up.

[1251]. Bunks. Place a number of small poles about seven feet long close together, the upper ends resting on a cross pole about six inches in diameter and the lower ends resting on the ground; or, the poles may be raised entirely off the ground by being placed on cross poles supported by forked stakes at the corners; on the poles place grass, leaves, etc.

[1252]. Wood. The firewood should be collected, cut and piled near the kitchen. Dry wood is usually found under logs or roots of trees.

If wagons are not heavily loaded it is sometimes a good plan to bring a few sticks of dry wood from the preceding camp, or to pick up good wood en route.

[1253]. Water. Precautionary measures should always be taken to prevent the contamination of the water, and a guard from the first troops reaching camp should at once be placed over the water supply.

If the water is obtained from a stream, places should be designated as follows for getting water:

The first designated place should be farthest up the stream; the others, in the order named, downstream.

Where two bodies of troops are to camp on the same stream one must not pollute the water to be used by the other. This can be arranged by the commanders agreeing upon a point where both commands will obtain their drinking water, upon a second point where animals will be watered, etc.