The M3 Stuart, formally Light Tank M3, is an American light tank of World War II. It was supplied to British and Commonwealth forces under lend-lease prior to the entry of the U.S. into the war. Thereafter, it was used by U.S. and Allied forces until the end of the war.The name General Stuart or Stuart given by the British comes from the American Civil War Confederate General J.E.B. Stuart and was used for both the M3 and the derivative M5 Light Tank.