Watch The Battle of Britain (1969) (1969) HD Full Movie Free on SolarMovie. Watch The Battle of Britain (1969) (1969) online free. In 1940, the British Royal Air Force fights a desperate battle to prevent the Luftwaffe from gaining...In 1940, the British Royal Air Force fights a desperate battle to prevent the Luftwaffe from gaining air superiority over the English Channel as a prelude to a possible Axis invasion of the U.K.