Frederic Charles Dreyer Wikipedia Admiral Sir Frederic Charles Dreyer GBE KCB 8 January 1878 – 11 December 1956 was an officer of the Royal Navy A gunnery expert he developed a fire control system for British warships and served as flag captain to Admiral Sir John Jellicoe at the Battle of Jutland He retired with the rank of admiral in 1943 having served through two world wars and