WW2 SLANG

MICK
A soldier in an Irish regiment. Specifically, The Micks is the nickname of the Irish Guards.
 
MICKEY
Louse. Origin of the phrase taking the mickey, to tease.
 
MILLS BOMB
British No. 5 grenade. Invented by William Mills (1856-1932) of Birmingham in 1915, it remained in service in a modified form with the British army until the 1960s.
 
MINNIEWERFER
German trench mortar. A variety of calibres were employed. From German Minenwerfer, mine thrower.
 
MOANING MINNIE
Shells fired from a German Minenwerfer. From the noise of flight and the name given by the British to the weapon