(_h_) He must, when employing individual fire on the defensive, especially at shorter ranges, _mark down troops by noting their position on the ground or behind cover, and open fire the moment they expose themselves or rise up to advance_. =4. Working in Pairs.=--Combined action is always more likely to be successful than isolated effort, and so long as control is possible the individual man must watch his leader and do his best to carry out his intentions. When, however, the section is under heavy fire, section commanders cannot always exercise direct control, and in these circumstances men should endeavour to work in pairs, indicating targets and estimating the range for each other, firing steadily, observing the results of each other’s fire, and husbanding their ammunition. =5. Ammunition.=--If incapacitated from advancing, the soldier’s first duty is to place his ammunition in a conspicuous place, ready to be picked up by other men, and all ranks must seize opportunities that offer for replenishing their ammunition in this manner. =6. Duty of Soldier when separated from Unit Commander.=--If, when reinforcing the firing-line, or at any other time, a soldier loses touch with his section commander, it is his duty to place himself under the orders of the nearest officer or non-commissioned officer, irrespective of the company or battalion to which he may belong. =7. Training in Fire Discipline.=--The foundation of training in fire discipline will be laid in the general training of the soldier, especially in the instruction which imbues him with the soldierly spirit, and develops his character in discipline and other soldierly qualities.[25] The recruit’s instruction in aiming and firing and fire discipline will be carried out concurrently with his training in drill in both close and extended order, as laid down in the directions for the annual individual training of the soldier in _Infantry Training, 1914_, and other official textbooks. Training in fire discipline may commence when the recruit is sufficiently instructed in aiming and firing, and will be combined with training in extended order drill. _Fire discipline can only be taught by constant and systematic training._