World History > World War I in Global History > World War I in Global History Maps and Pictures

Trench Warfare in France: One of the trenches used by the French.  The trenches were often reinforced by sandbags, and protected on the side toward the enemy by barbed wire entanglements.  There were usually two or three lines of trenches, connected by communicating passages, which made it possible to pass from one to another without exposure to the enemy. Click here to visit the main page for our World War I image gallery.