Warner Brothers was one of the minor studios until they introduced the first talking picture, which made the studio into one of the majors. In the Thirties, Warner Brothers, led by the irascible Jack L. Warner, was known for its glitzy musicals and crime dramas. In the early Forties, the studio released two films that are now regarded as among the best American films ever made: The Maltese Falcon and Casablanca.

The Japanese claimed to be liberating their fellow Asians from Western oppression, but Japanese rule proved to be brutal and murderous.

In early 1943, the remaining residents of the Warsaw Ghetto rose up against the SS. Farther east, the German Army uncovers the mass grave where the Soviet NKVD buried thousands of murdered Polish Army officers.

After the Japanese attacked Pearl Harbor, the American atom bomb project kicked into high gear. Fearful that the Germans were already working on a bomb and had a head start, the US government built a huge program meant to approach the problem of building an atom bomb from several different angles all at once.

The Allies invade Sicily, which leads to the fall of Benito Mussolini.

Hitler himself said that he had "never been a man of the defensive," but in the aftermath of Stalingrad, he had no choice.

RKO Radio Pictures had a reputation for producing second-rate films. Even so, this was the studio that signed Fred Astaire and Katharine Hepburn; it was the studio that released King Kong and Citizen Kane.

The first in a series looking at the American film industry in the 1930s and 1940s, the heyday of the "studio system."

The fall of Burma to the Japanese put India on the front lines of the war, posing hard questions for the Indian nationalist movement.

The BBC struggles to determine its role in wartime Britain.