Seeing extensive action in the North African desert, the M3 was introduced in response to the problem of Allied tanks being outgunned by German equivalents. The M3 mounted a 75mm in the right sponson and a 37mm in the turret. Welcome as this was the tank crews did experience problems with trying to get the vehicle into a hull down position and still be able to fire the 75mm. This lead to the problem of the M3 presenting a very high silouette for German anti tank gunners.