The A22 is a British heavy infantry tank of the World War II era.
It was mass-produced from 1941 to 1945.
The engine (as GPT told me) was a Rolls-Roys Meteor.
The gun is a 57mm QF 6 Pounder (yes, it was taken from a howitzer).
Suspension is individual on vertical springs.
Armour thickness:
Front: 102mm/0°; 57mm/?°.
Side: 76mm/0°.
Stern: 64mm/0°