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.