Fig. 14.
The order by echelon upon the two wings Fig. 14 is of the same nature as the perpendicular order, (Fig. 11,) being, however, better than that, because, the echelons being nearest each other in the direction where the reserve would be placed, the enemy would be less able, both as regards room and time, to throw himself into the interval of the center and make at that point a threatening counter-attack.
Fig. 15.
The order by echelon on the center (Fig. 15) may be used with special success against an army occupying a position too much cut up and too extended, because, its center being then somewhat isolated from the wings and liable to overthrow, the army thus cut in two would be