This famous propaganda piece, used as a U.S. Army training film in WWII before theatrical release, asks 'why we fight.' The answer compares the 'free' and 'slave' worlds. Included: development of dictatorships in Italy, Germany and Japan, while anti-militarism and isolationism rise in the USA; a look at enemy propaganda; and the first acts of aggression. Walter Huston narrates a combination of archival footage, maps, and other graphics.