In offensive operations, it may be well to concentrate as much fire as possible on the intended point of attack.

The mounted artillery either acts in concert with the cavalry, of is used to reinforce that arm; the light-foot acts with the infantry, and the batteries of heavy calibre are distributed along the line, or concentrated on some important point where their fire may be most effectual.

They reach the enemy's forces at a distance, and arrest the impulsion of his attack.

They may also be employed to draw the fire of his artillery; but their movements are too slow and difficult for a reserve.
The order of succession in which the different arms are engaged in a battle, depends upon the nature of the ground and other accidental circumstances, and cannot be determined by any fixed rules.

The following, however, is most frequently employed, and in ordinary cases may be deemed good.
The attack is first opened by a cannonade; light troops are sent forward to annoy the enemy, and, if possible, to pick off his artillerists.