The Chetnik Detachments of the Yugoslav Army, commonly known as the Chetniks (, Четници, ; ), was a World War II movement in Yugoslavia led by Draža Mihailović, an anti-Axis movement in their long-range goals and engaged in marginal resistance activities for limited periods. They also engaged in tactical or selective collaboration with the occupying forces for almost all of the war. The Mihailović Chetniks were not a homogeneous movement. The Chetnik movement adopted a policy of collaboration with regard to the Axis, and engaged in cooperation to one degree or another by establishing modus vivendi or operating as "legalised" auxiliary forces under Axis control. Over a period of time, and in different parts of the country, the Chetnik movement was progressively drawn into collaboration agreements: first with the Nedić forces in the Territory of the Military Commander in Serbia, then with the Italians in occupied Dalmatia and Montenegro, with some of the Ustaše forces in northern Bosnia, and after the Italian capitulation also with the Germans directly.