World War 1
Worldwar1.com: Trenches on the Web: The Trenches at Messines 1916 17
Shows British maps of trench warfare and gives a brief explanation.
World War 1
Worldwar1.com: Trenches on the Web: Photo Archive: The Ypres Salient, 1917
Photos to click on to see images of World War I trenches: "An Australian trench," "British infantry knee deep in mud," "An abandoned German trench at Messines Ridge".