A Yank in the RAF is brash pilot Tim Baker (Tyrone Power), freshly arrived in London. Hoping to impress his nightclub-singer girlfriend Carol Brown (Betty Grable), Tim joins the Royal Air Force, immediately alienating everyone with his cockiness and "What the Hell?" attitude concerning the war. All this changes when Baker is obliged to fly under combat conditions, whereupon he shows what he's really made of. One of the most popular of the pre-Pearl Harbor "preparedness" films, A Yank in the RAF comes to an exciting conclusion, with actual newsreel footage of the evacuation of Dunkirk expertly matched with studio mockups. As a bonus, Betty Grable sings such catchy numbers as Another Little Dream Won't Do Us Any Harm.
by Hal Erickson synopsis