Fig. 42, par. 400.
401. Being in line, to face or march the line to the rear: 1. Fours right (left) about, 2. MARCH.
When the movement is executed by signal the elements of the column always turn to the left about. The oral command fours right about is not accompanied by an arm signal.
Each four turns 180 degrees in the direction indicated (par. 389). The leader, passing around a flank of the squad, promptly takes position in front of the guide so as to lead the squad in the new direction (pars. 325, 372).
To face to the rear, the squad is halted as the fours unite in line.
The modifications incident to the execution of the dismounted movement are indicated in par. 391.
Gaits are regulated as in par. 337d-d.
A dismounted squad may also be marched a short distance to the rear by the oral command and methods indicated in par. 82.
402. Being in column of fours, twos, or troopers, to face or march the column to the rear: 1. Fours (twos, troopers), right (left) about, 2. MARCH.