Australian troops arrived in Greece during March 1941, and manned defensive positions in the north of the country alongside British, New Zealand and Greek units. formed part of the naval force which protected the Allied troop convoys travelling to Greece and participated in the Battle of Cape Matapan in late March. The outnumbered Allied force, unable to halt the Germans when they invaded on 6 April, had to retreat. The Australians and other Allied units conducted a fighting withdrawal from their initial positions and naval ships evacuated them from southern Greece between 24 April and 1 May. Australian warships formed part of the force which protected the evacuation and embarked hundreds of soldiers from Greek ports. The 6th Division suffered heavy casualties in this campaign, with 320 men killed and 2,030 captured.