Despite using 9mm parabellum ammunition in its Sten and Lanchester sub machine guns, the British did not introduce a specialist drill round for training until 1951. Up until this point various commercial manufacturer’s in America and Canada had produced drill rounds for use by the British, but these rounds were very similar in appearance to standard rounds, with just small holes drilled in the case to indicate they were drill rounds. Obviously a safer form of ammunition was needed and the ‘Cartridge S.A. Drill 9mm D2 Mark 2’ was approved in 1951:These rounds allowed troops to safely practice filling magazines such as that for the Sterling:Other uses for the cartridge were to cycle rounds manually through a firearm to demonstrate its operation or to indicate it was working correctly. The cases were made of white metal, or chromed brass with three red painted flutes around the edges to allow them to be identified in the dark by touch alone:The cap chamber on the base is empty and painted red:The round has a normal brass bullet resting on a wooden spacer. The base of the cartridge has the usual head stamps indicating date and place of manufacture. In this instance two of the three rounds in my collection are heavily worn for use, but one is nice and clear:From this we can see that the round is a 9mm D2 round manufactured by Radway Green in 1976. In 1978 the round was changed to a plain silver casing without the red painted flutes and cap chamber. In 1986 production switched to Hirtenberger in Austria, probably as a money saving exercise.