(vii) The employment of covering fire, and the compliance with the principle of mutual support.
(viii) The rallying of the companies after an assault.
BRIGADE AND DIVISION DRILL.
103. General Rules.
1. Movements in brigade and division are practised in order to accustom the battalions to assemble rapidly and without confusion; and to train them to march in mass, without losing distance or interval.
2. The brigade or division commander may give his orders verbally, but on service and at manœuvres orders may be written, and the object of every important movement or formation should invariably be explained to the battalion commanders, and, in case of a division, to the brigadiers.
3. Instructions given by the commander of a parade will be passed by commanding and mounted officers, who are responsible that they are distinctly conveyed to, and understood by, the next unit.
On receiving their instructions, commanding officers will give all necessary orders and be prepared to march off their battalions together on the signal or order of the brigadier. The cautions and commands given by commanding officers will be as in Battalion Drill.
When the progress of an order is interrupted, commanding officers will conform, as quickly as possible, to the movement they see in execution.
4. Intervals and distances of thirty paces between battalions and brigades, and sixty between divisions, will be preserved in all formations, unless otherwise ordered.