In September 1939, Germany invades Poland, setting the stage for the most destructive war in history.

After toppling the Netherlands and Belgium, Nazi Germany pushes further west. The Allies scramble to support France as Churchill is forced to defend Britain from the skies and FDR rushes to mobilize wartime production.

The story of Operation Barbarossa, Hitler's massive surprise invasion of the Soviet Union in 1941, the largest and costliest land offensive in human history.

Japan escalates their war in China, drawing increasing US sanctions and widespread outrage. Driven by resource shortages and military ideology, Japan attacks Pearl Harbor in a move that will reshape the course of World War II.

The story of how America's battle to control the seas against the terrifying German U-boats in the Atlantic and Japan's fearsome Navy in the Pacific ultimately turns the tide of the war.

After the attack on Pearl Harbor, Japanese forces sweep across Southeast Asia. On Guadalcanal, United States Marines are given the bloody task of stopping their relentless advance.

Hitler's hateful rhetoric leads to anti-Jewish persecution and ultimately, genocide.

Thousands of inexperienced U.S. troops face off against the hardened German Afrika Korps.

Behind the fierce frontline clashes of WWII, a hidden battle rages - one of espionage, deception, and codebreaking. In rural England, a group of brilliant academics work to crack Germany's unbreakable Enigma Code and change the course of the war.