The North American P-51D Mustang was probably the best all-around single seat piston-engine fighter to be used in World War 2.The first U.S.A.A.F.combat group arrived in Britain in November 1943 and from then until the end of the war, the P-51 earned an enviable reputation an a long-ranged fighter-escort for the B-17 and the B-24 bombers raiding deep in the heart of the German homeland.