=351.= =The formation in column of fours, twos, or troopers= (par. 368-_b_, _c_, _d_) is similarly executed. The leader commands: =LEAD INTO COLUMN (COLUMN OF TWOS, COLUMN OF TROOPERS)=. The trooper upon whom the formation is based (par. 350) becomes No. 1 of the leading four. The elements of the column form, in order from front to rear, with distances of 4 feet between successive, fours, twos, or troopers. In column of fours or twos each four or two forms on its right trooper as in line. When the formation is in column of _fours_ the command =COUNT FOURS= is omitted. The leader cautions: =NOTE YOUR NUMBERS=. =352.= =The squad may also form in similar manner after the troopers mount.= In this case the leader causes the troopers to mount individually after saddling and commands: =RIDE INTO LINE (COLUMN, COLUMN OF TWOS, COLUMN OF TROOPERS).= The interval between the mounted troopers is 6 inches from knee to knee. TO FORM THE SQUAD, DISMOUNTED. =353.= For the dismounted formation of the squad, =in line=, when not armed with the rifle, the leader designates the trooper to act as the base, indicates the latter's position, and takes his own position as described in par. 350, above. He then commands: =FALL IN=. The troopers form as in pars. 57 and 58. The leader then calls the roll and causes the squad to count fours. If armed with the rifle, the troopers fall in with rifles at the _order_. As soon as the line or column is formed the leader commands: 1. =Inspection=, 2. =ARMS=, 3. =Right shoulder=, 4. =ARMS= (par. 91-_2d_), and calls the roll. Each man, as his name is called, answers =here= and executes =order arms=. The formation in column of fours, twos, or troopers is conducted in accordance with the modifications indicated. The commands of the leader are: =FALL IN, IN COLUMN (COLUMN OF TWOS, COLUMN OF TROOPERS)=. The distance between successive fours is 92 inches; between successive twos, 40 inches; between successive troopers, 14 inches. TO MOUNT AND DISMOUNT. =354.= The squad being =in line=, at stand to horse, the habitual commands for mounting are: 1. =Prepare to mount=, 2. =MOUNT=; 3. =Form=, 4. =RANK.= At the first command the odd numbers lead out 4 yards directly to the front, and all execute the movements and take the final positions prescribed in par. 191-_a_. At the second command all the troopers complete, simultaneously, the movements of mounting as prescribed in par. 191-_b_. At the fourth command the even numbers move up into their intervals in the line. If the squad has dismounted from line and has formed rank (par. 356), the odd numbers stand fast at the command =Prepare to mount= and all mount in place.