Supports fix bayonets, but do not load. Whenever practicable and necessary they should be used for counterattacks, preferably against a hostile flank.
The defender should open fire as soon as results may be expected. This fire may avert or postpone the bayonet combat, and it warns all supporting troops. It is not likely that fire alone can stop the attack. The defender must be resolved to fight with the bayonet.
Ordinarily fire will not be effective at ranges exceeding 50 yards.
A white rag around the muzzle of the rifle will assist in sighting the piece when the front sight is not visible.
See paragraphs [450], [482], [483], [509], [510].
INFANTRY AGAINST CAVALRY.
[569.] A cavalry charge can accomplish little against infantry, even in inferior numbers, unless the latter are surprised, become panic-stricken, run away, or can not use their rifles.
[570.] A charge from the front is easily checked by a well-directed and sustained fire.
If the charge is directed against the flank of the firing line, the supports, reserves, or machine guns should stop it. If this disposition is impracticable, part of the line must meet the charge by a timely change of front. If the flank company, or companies, in the firing line execute platoons right, the successive firing lines can ordinarily break a charge against the flank. If the cavalry line passes through the firing line, the latter will be little damaged if the men retain their presence of mind. They should be on the watch for succeeding cavalry lines and leave those that have passed through to friendly troops in rear.
[571.] Men standing are in the best position to meet a charge, but other considerations may compel them to meet it lying prone.