When the Germans, Italians, Hungarians, and Bulgarians invade Yugoslavia on 6 April 1941, Serbian army colonel Draža Mihailović forms a band of guerrillas known as the Chetniks, who launch a resistance movement against the Axis occupation. Mihailović's forces then engage in an attack on the German and Italian forces, forcing them to employ seven Axis divisions against them. (texto oficial de la distribuidora)