Divide and Conquer (1943) is the third film of Frank Capra's Why We Fight propaganda film series, dealing with the Nazi conquest of Western Europe in 1940. The film begins immediately after the fall of Poland. Of the two major Western Allies of 1940, the United Kingdom is first to be mentioned. The role of the Royal Navy in blockading Germany is highlighted, in that it means that Germany must overcome British resistance in order to clear the way for its world conquest.