Group captain

Group Captain. A commissioned rank in the RAF equivalent to that of Captain in the Royal Navy and Colonel in the British Army.
A Group Captain may be distinguished by the four rings on his sleeve or the four bars on the shoulders of his greatcoat.

Ground testing and taxi trials took place over the following two weeks, and on 6 November 1935, the prototype took to the air for the first time at the hands of Hawker's chief test pilot, Flight Lieutenant (later Group Captain) P.W.S. Bulman.

See also: RAF, Flight, Navigation, Wind, Group