Churchill's view was that Coward would do more for the war effort by entertaining the troops and the home front than by intelligence work: "Go and sing to them when the guns are firing – that's your job!" Coward, though disappointed, followed this advice. He toured, acted and sang indefatigably in Europe, Africa, Asia and America. He wrote and recorded war-themed popular songs, including "London Pride" and "Don't Let's Be Beastly to the Germans". His London home was wrecked by German bombs in 1941, and he took up temporary residence at the Savoy Hotel. During one air raid on the area around the Savoy he joined Carroll Gibbons and Judy Campbell in impromptu cabaret to distract the captive guests from their fears. Another of Coward's wartime projects, as writer, star, composer and co-director (alongside David Lean), was the naval film drama "In Which We Serve". The film was popular on both sides of the Atlantic, and he was awarded an honorary certificate of merit at the 1943 Academy Awards ceremony. Coward played a naval captain, basing the character on his friend Lord Louis Mountbatten. Lean went on to direct and adapt film versions of several Coward plays.