Valentine II - AEC A190 131 hp 6-cylinder diesel engine. To increase its range in the desert, an auxiliary jettisonable external fuel tank was installed to the left of the engine compartment.
Valentine IV - Valentine Mk.II using an American 138 hp GMC 6004 diesel engine and US-made transmission. Though it had slightly shorter range, it was quieter and highly reliable.
The Lend-Lease policy, British Churchill, Matilda and Valentine tanks were shipped to the Soviet Union