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 the event of an unsuccessful issue, the machine-gun detachment can render considerable service by opposing the enemy, regardless of the possible loss of the guns, and by pouring a vigorous fire into him. For keeping the enemy in check, positions behind defiles with covered lines of retreat are especially suitable.

Special importance must be attached to the provision of sufficient ammunition, to the thorough reconnaissance of the lines of retreat, and to the correct estimation of the moment for beginning to retire, especially when the movement is to be carried out in echelon. To avoid obstruction the ammunition wagons must be moved away at the right moment. Increased attention must be paid to the flanks, since it is from these that danger most threatens during a retreat. If suitable positions can be occupied on the flanks, increased facilities for conducting the retreat will be obtained by utilising them.

''Para. 250.''—Machine guns attached to independent cavalry might be used to increase the power of cavalry, mounted and dismounted, and on the offensive and defensive. The duties that will fall on machine guns in this service demand great mobility and the strictest fire discipline.

''Para. 251.''—The commander of the independent cavalry will make all decisions regarding the employment of machine guns. He communicates all his plans of action to the machine gun commander, and provides him further with