At every available place throughout the defensive position machine guns are located, typical positions of which are shown in Plate 1.
The typical types of cover are shown in Plates 26 and 27.
Machine guns are a very potent factor in trench warfare. They are now being employed to a far greater extent than ever before, and the number is increasing on all the battle fronts as fast as they can be manufactured. The machine-gun positions are carefully concealed from the enemy, and fire is not opened until it is certain that it will be effective.
The selection of the sites for the emplacements should be made with a view to bringing a powerful enfilade or oblique fire on the attacking enemy at effective range, to provide a flanking fire for supporting troops, and to sweep gaps in the line of obstacles.
From World's Work.
Plate 26.—Profile of type of cover for machine gun.