 Following the clamor for better armor and firepower after the losses of the Battle of the Bulge, Patton ordered extra armor plates salvaged from knocked-out American and German tanks welded to the turrets and hulls of tanks of his command.Approximately 36 of these up-armored M4s were supplied to each of the three armored divisions of the Third Army in the spring of 1945.The M4A3E2 Sherman "Jumbo" assault tank variant, based upon a standard M4A3(75)W hull, had an additional plate welded to the glacis, giving a total thickness of , which resulted in a glacis of line-of-sight thickness, and over effective thickness.