During World War II, Paley served as director of radio operations of the Psychological Warfare branch in the Office of War Information at Allied Force Headquarters in London, where he held the rank of colonel. While based in England during the war, Paley came to know and befriend Edward R. Murrow, CBS's head of European news who expanded the news division's foreign coverage with a team of war correspondents later known as the Murrow Boys. In 1946, Paley promoted Frank Stanton to president of CBS. CBS expanded into TV and rode the postwar boom to surpass NBC, which had dominated radio.