Europe Plunges Into War. Introduction.
General Alfred Graf von Schlieffen
Australian troops in the trenches equipped with gas masks, Battle of Ypres, 1917
The British Vickers machine gun required a six man team to operate. One to fire, one to feed the ammunition, and the rest to help carry the weapon and supplies.
German U-Boat U-14
(pp. 101-103, Ballantine paperback edition.)