. . .discusses major incidents that led to the outbreak of war in Europe and the neutrality of the United States, until the culminating threat of Mexico, and the country being compelled to join the Allied Forces, even against protest at home. It discusses the preparation it took for America and describes in brief detail many of the major battles in World War I both before and after the United States joined. It discusses how industrialization and technology made WWI a catastrophic war in its use of modern weaponry like chemical weapons, machine guns, tanks, and earth-shattering artillery guns, like Big Bertha. It also contains sections on the efforts of women, and their changing roles and contribution to the American war effort.