M2A1 Medium Tank
1,000 were ordered into production in June 1940. However, the M3 Medium was nearing completion and only 94 were completed. These were used for training.
Or,
M2 Light Tank
This
M2A4 is externally very similar to the
M3 Stuart. However, visible differences include the raised idler wheel, seven pistol ports ringing the turret compared with the
M3's three, and the recoil mechanism of the 37mm gun extended from the gun shield and was therefore protected by armor. This tank apparently has its sponson machine guns fitted. This tank was in England in 1942 or 1943 and was part of a Lend-Lease shipment.