8 .-- Interior and central line of operations.
Fig.

9 represents a camp of a grand division of an army.

The distance from the front row of tents to the line of camp-guards should be from 350 to 400 feet; thence to the line of posts, from 150 to 200 feet; thence to the line of sentinels, from 100 to 200 feet.

In many cases, the line of posts between the camp-guards and sentinels may be dispensed with.

The distance between battalions will be from 50 to 100 feet; and the same between squadrons and batteries.
Fig.