ATTACK OF A DEFILE.
194.—When defended in front.
If it is defended in front, try to advance rapidly by one or both flanks, small fractions only attacking on the valley bottom, while the greater part of the attacking force progresses on the heights on either side, the flanks striving to keep forward so as to reach the other end before the defenders and encircle them.
195.—When defended in rear.
If the defile is defended at the farther end, as in the case of a bridge, echelon units (properly covered) for heavy concentrated fire from the bank held and cross the bridge on the run and in small groups.