The M4 Sherman was the main Allied tank in WW2, mass-produced to an extent of 50,000 and used in countless conflicts through numerous decades.
Medium Tank M4 Sherman
Modelling the US Army M4 (76mm) Sherman Medium Tank: Buy Modelling
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M4 Sherman variants - Wikipedia
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D-Day History - Utah Beach/Normandy The M4 Sherman, officially
Why did it take the Americans so long to field a replacement for the M4 Sherman? - Quora
Medium Tank M4A1 (76) Sherman in Ugandan Service - Tank Encyclopedia
Inside An M4 Sherman Tank With Historian James Holland
T20 medium tank - Wikipedia
Was the Sherman tank really the worst tank of WWII or that is just a documentary myth? - Quora