Opening with some of the earliest color motion picture images ever filmed-of a victory parade in Paris at the end of World War I-this episode takes viewers from the years leading up to the outbreak of the Second World War, through the Nazi invasion of Poland that triggered Britain's and France's declaration of war on Germany, to the attack on Pearl Harbor and the Battle of Midway. Among the many scenes captured by color footage are life in Depression-era America; huge Nazi rallies in pre-war Germany; the sinking of a British merchant ship six weeks into the war and the rescue effort mounted by a passing American vessel; civilian refugees streaming along the roads of occupied France; the devastation at Pearl Harbor as photographed by a Navy film unit working for Hollywood director John Ford; and the U.S. victory over the Japanese at Midway—the decisive sea battle of the Pacific war.

The second episode focuses on the years 1942 to 1944, from the massive buildup of America's military and industrial capabilities to preparations for D-Day. Among the many images captured in color are the mobilization of women and African Americans on the industrial home front and in the military; the internment of Japanese Americans; American troops landing in North Africa, and tank battles in the North African desert; training of African-American aviators at Alabama's Tuskegee Institute; the horrors of the Warsaw Ghetto; activity behind Nazi lines in Yugoslavia, and Yugoslavian resistance fighters helping downed U.S. airmen; and the boarding of troops onto landing craft bound for Normandy, scene of what was to be the largest amphibious invasion in history.

The third episode focuses on the European theater during the months between D-Day, in June 1944, and V-E Day, in May 1945. Among the many scenes captured by color footage are the seizure, two days before D-Day, of a German U-boat carrying Enigma code machines; the massive Allied assault on the beaches at Normandy; the jubilant welcome received by G.I.s after the liberation of Paris; freed American POWs burning their prison; Red Cross "doughnut girls"; the first Jewish Sabbath service conducted at the just-liberated Dachau concentration camp; and V-E Day celebrations following Germany's surrender.