In the swift invasion and occupation of Yugoslavia and Greece in early April 1941, the Germans committed some 337,000 men, 2,000 mortars, 1,500 artillery pieces, 1,100 anti-tank guns, 875 tanks and 740 other armoured fighting vehicles, all of which were under the overall command of Brauchitsch. By the end of the month, all of Yugoslavia and Greece were in German hands.