7 things you (probably) didn’t know about America’s entry and involvement in the First World War

American troops arrived on the western front in 1918 full of enthusiasm, and in the spirit of great adventure. Yet most of them were novices who, unlike their German counterparts, had seen practically no action. Determined to teach them this was no game, the Germans proceeded to unleash the war's most harmful weapons. Here are 7 facts you might not know about America's entry into the First World War…