A-13 (tank)
The A-13 was a specification of British Cruiser tanks produced by the General Staff Directorate of Tank Design before and during the Second World War.
The A13 specification was produced prior to the second world war, calling for the development of a new cruiser tank. This was the first specification of British cruiser tank to be based on the Christie suspension design.
The specification was revised over time, and lead to the development of three different vehicles: