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 to bring this question of employment to his notice. At later stages they must keep in constant communication with him. Guns and machine guns come into action for the first time by order of the leader.

''Para. 502.''—As a general principle, fire is to be opened on those portions of the enemy the defeat of which is likely to influence the decision of the fight. Under anything like equal conditions, a duel with the hostile artillery cannot lead to rapid results. But should the hostile artillery expose itself, the opportunity must be seized with rapidity and energy. It may be also necessary to engage hostile artillery in order to draw their fire from the cavalry.

''Para. 503.''—Fire control is facilitated by keeping the batteries together, nor is any great dispersion of the machine-gun sections, as a rule, to be recommended. Many lines of fire cramp the movements of cavalry during the mounted combat. The conditions of the fight, however, or the configuration of the ground, may necessitate dispersions and separate positions Machine guns only require an escort when the field of view is very restricted.

''Para. 507.—In the mounted cavalry combat'' guns and machine guns must be brought into action so as to support, firstly, the deployment; secondly, the attack. Positions for the machine guns, to a flank and in front of the advancing cavalry, all on rising ground, will allow fire to be maintained until immediately before the