The _squad_ executes =assemble= only when deployed as foragers and =in order=. Under other conditions the rally (par. 416), followed, by =count fours=, more easily accomplishes the purposes of the =assembly= (Def.). In executing the assembly dismounted the troopers close in on the guide in double time _without special command_ if the guide and leader continue to advance (par. 339-_g_); otherwise they close in at quick time unless double time be commanded (par. 339-_b_). (Fig. 42.) [Illustration: FIG. 48, par. 414.] =415.= If =to the rear= (par. 412) be executed by the squad, a temporary loss of =order= occurs. If it be desired to pass to close order without resuming the march to the front and assembling (par. 414), the squad may rally (par. 416) and count fours. =416.= =Being in any formation, or not formed, or in disorder, to rally=; =RALLY=. _When the rally is ordered the signal is habitually accompanied by the oral command, both the signal and the oral command, being repeated until understood and obeyed. The signal is obeyed at once, there being no preparatory command for this movement._ The leader takes position at any point or moves in any desired direction, and at any gait that will permit the movement to be executed. The troopers ride toward the leader at an extended gallop and, in the absence of other indication, form in rear of the leader in line. The leader promptly designates the guide (pars. 371, 373), who follows the leader. The other troopers form, as they come up, on the right and left of the guide extending the line. The leader may caution: =COLUMN=, as the leading troopers approach. The troopers then form in =column of fours= instead of in =line=. The leading element forms first; the other troopers, as they arrive, successively form fours, extending the column to the rear. The leader designates the guide (pars. 373, 374) and cautions: =NOTE YOUR NUMBERS=. The rally in column is exceptional and is intended for use only on occasions when a narrow road or other circumstances of the terrain prevent the rally in line. Should the route along which the leader is moving when the rally is ordered be too narrow to permit the formation of column of fours, the leader may caution: =COLUMN OF TWOS (COLUMN OF TROOPERS)= as the leading troopers approach. The movement is executed as explained for the rally in column of fours. =Fours= should be counted at once. The rally in columns of twos or troopers is to be regarded as very exceptional. The squad being rallied in line, though ordinarily not =in order= until fours are counted (par. 470), is available at once to charge or to execute any movement that does not involve a knowledge of their respective numbers on the part of the individual troopers. Unless the charge is to be executed at once, fours should be counted without delay after rallying, so that the squad, may be =in order= and ready to execute any movements whatever that conditions may demand.