Even then the rear divisions and trains will hardly reach camp much before night.

Theoretically, a marching column should preserve such order that by simply halting and facing to the right or left, it would be in line of battle; but this is rarely the case, and generally deployments are made "forward," by conducting each brigade by the flank obliquely to the right or left to its approximate position in line of battle, and there deployed.

In such a line of battle, a brigade of three thousand infantry would occupy a mile of "front;" but for a strong line of battle five-thousand men with two batteries should be allowed to each mile, or a division would habitually constitute a double line with skirmishers and a reserve on a mile of "front." The "feeding" of an army is a matter of the most vital importance, and demands the earliest attention of the general intrusted with a campaign.

To be strong, healthy, and capable of the largest measure of physical effort, the soldier needs about three pounds gross of food per day, and the horse or mule about twenty pounds.
When a general first estimates the quantity of food and forage needed for an army of fifty or one hundred thousand men, he is apt to be dismayed, and here a good staff is indispensable, though the general cannot throw off on them the responsibility.

He must give the subject his personal attention, for the army reposes in him alone, and should never doubt the fact that their existence overrides in importance all other considerations.