Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. GB-8 was a precision guided munition developed by the United States during World War II . It was one of the precursors of modern anti-ship missiles. Following German success with the Hs-293 and Fritz- X, the U.S. began developing several similar weapons, such as Felix, Azon, Gargoyle, GB-4, and GB- 8. GB-8 was intended as a clear weather, good visibility weapon to attack heavily-defended targets. It featured a plywood airframe with twin booms and fins with a single elevator. The warhead was a 2000 lb (907 kg) general purpose (GP) bomb.