The United States was reluctant to join the “Great War,” or World War I, due in part to its belief that this was a European conflict, as well as resistance from many German immigrants in the United States. After several years of neutrality, the United States joined the war in April, 1917, on the side of the Allied Powers. However, in order to become involved, we first needed to bolster our military recruitment, war industry, and, most importantly, support from citizens. This unit examines propaganda posters and photographs, letters the Gibbon children wrote their father serving in France, and a collection of plane reconnaissance information and photographs by Captain Stephen H. Noyes. These primary sources portray the war effort on the homefront as well as on the front lines. The unique perspective portrayed in each of the lessons will provide students with a well-rounded look into one of the deadliest eras of our history.