High Quality Content by WIKIPEDIA articles! No 204 Squadron was a Royal Air Force squadron formed in 1918 near Dunkerque, France, from No 4 Squadron Royal Naval Air Service, which had already been formed in 1915 and reformed once in 1916. The squadron served during World War I in the roles of bomber, scout and fighter unit. After that war the squadron was reformed as a flying boat unit, a role that it continued till the end of World War II. After World War II the squadron was reformed as a transport unit and as last role it performed duties as a maritime reconnaissance, shipping surveillance and search and rescue unit.