169.—In liaison with the captain.
The sections kept in support are at the disposition of the captain.
170.—Method of advance.
Under the command of the section leader, they advance, in double file, at proper intervals or deployed, according to their proximity to the enemy and according to the terrain (covered or uncovered).
171.—Distance from the firing line.
They should be about 250 yards behind the firing line to whose movements they conform.
172.—Supplying the firing line.
The section leaders keep in sight of the captain and upon his signaled command advance into the firing line either to fill up a gap or to reinforce a section.
173.—When filling a gap.