157.—Fire observation.
The section leaders are helped in their observation of the fire effect by observers standing besides them. The fire is usually directed independently by section or half section.
158.—Verification of range.
In principle, the corporals do not take part in the fire but verify the range and direction of the fire of their respective squads.
ADVANCING THE FIRING LINE.
159.—Methods of advance.
To advance the firing line in attack, all means are good: by section, half-section, squad, the only condition being that it be by commanded fractions.
160.—Closing in to replace casualties.
As men fall, the rest close in toward the section leader, the sections rectifying intervals on the sections furthest advanced (the captain is with this section, all sections being now in line.)
161.—Closing in on the battalion front.