One of the mysteries of the English language finally explained.
1In plural Usually with the and capital initials: (a name for) the Parachute Regiment of the British Army; (now more usually) the Parachute Regiment's display team.
2A type of Italian hand grenade used during the Second World War (1939–45).
3North American slang. = red-bird.
1940s; earliest use found in The Times. From red + devil. In sense 1 so called on account of the red berets worn by this regiment.
red devil/ˌrɛd ˈdɛvl/
In this article we explore how to impress employers with a spot-on CV.