
The Italian governorate of Montenegro existed from October 1941 to September 1943 as an occupied territory under military government of Fascist Italy during World War II. Although the Italians had intended to establish a quasi-independent Montenegrin kingdom, these plans were permanently shelved after a popular uprising in July 1941. Following the Italian surrender in September 1943, the territory of Montenegro was occupied by German forces which withdrew in December 1944.

The Italian governorate of Montenegro existed from October 1941 to September 1943 as an occupied territory under military government of Fascist Italy during World War II. Although the Italians had intended to establish a quasi-independent Montenegrin kingdom, these plans were permanently shelved after a popular uprising in July 1941. Following the Italian surrender in September 1943, the territory of Montenegro was occupied by German forces which withdrew in December 1944.

The Chetniks, formally the Chetnik Detachments of the Yugoslav Army, and also the Yugoslav Army in the Homeland and the Ravna Gora Movement, was a Yugoslav royalist and Serbian nationalist movement and guerrilla force in Axis-occupied Yugoslavia. Although it was not a homogeneous movement, it was led by Draža Mihailović. While it was anti-Axis in its long-term goals and engaged in marginal resistance activities for limited periods, it also engaged in tactical or selective collaboration with the occupying forces for almost all of the war. 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 movement was progressively drawn into collaboration agreements: first with the puppet Government of National Salvation in the German-occupied territory of Serbia, then with the Italians in occupied Dalmatia and Montenegro, with some of the Ustaše forces in northern Bosnia, and, after the Italian capitulation in September 1943, with the Germans directly.

The Operation Draufgänger was a German Wehrmacht military operation against the Yugoslav Partisans at the Montenegrin-Serbian border area, aimed at breaking the Partisan foothold on the Lim river which was a potential penetration point into Serbia. In turn, it was a Partisan counter-operation, known as the Andrijevica Operation. The operation began on 18 July on the Čakor–Gusinje–Andrijevica–Berane line, when Kampfgruppe E burnt down at least 16 villages and killed several hundreds inhabitants. From different directions, German troops attacked villages and a part approached Andrijevica, pushed out parts of two Partisan brigades, and then took over the town on 19 July and continued attacking. The staffs of the Partisan brigades assessed the combined German forces as inadequate and self-initiatively decided to attacks, resulting in great German losses. With the possibility to surround and destroy, the II Assault Corps gave the operational command on 23 July on general attack. From different directions the German troops were surrounded in the wider region of Murino on 24 July. On 28 July the Partisan 2nd, 5th and 17th divisions were ordered to move across the Ibar, which gave the opportunity for the 14th Regiment SS to break through Čakor towards Peć, while larger part of the 21st Division SS broke and many Albanians deserted. The German troops were decisively defeated, and the Partisans moved for action in Serbia. Operation Rübezahl followed.

The German-occupied territory of Montenegro was the area of the Italian governorate of Montenegro occupied by German forces in September 1943, after the Armistice of Cassibile; in which the Kingdom of Italy capitulated and joined the Allies. Italian forces retreated from the governorate, and from neighbouring Albania. German forces occupied Montenegro, along with Albania, and the territory remained under German occupation until Axis forces evacuated in December 1944.

The Greens were a group of loyalists of King Nicholas I of Montenegro which originated from the membership of True People's Party, most notable for instigating the Christmas Rebellion of 1919 in an attempt to prevent the deposing of the House of Petrović-Njegoš and such integration of Montenegro into the unitary Kingdom of Yugoslavia. Greens were supporters of the Petrović-Njegoš dynasty, which was dethroned after the World War I, and fought for the establishment of Montenegro as a federal unit within the Yugoslav federation. Following the defeat in Christmas Rebellion, the Greens continued with guerrilla warfare until 1929. The motto of the movement was "For the Right, Honour and Freedom of Montenegro".

The Uprising in Montenegro (Montenegrin: Ustanak u Crnoj Gori), commonly known as the 13 July Uprising (Montenegrin: Trinaestojulski ustanak) was an uprising against Italian occupation forces in Montenegro. Initiated by the Communist Party of Yugoslavia on 13 July 1941, it was suppressed within six weeks, but continued at a much lower intensity until December 1941. The insurgents were led by a combination of communists and former Royal Yugoslav Army officers from Montenegro. Some of the officers had recently been released from prisoner-of-war camps following their capture during the invasion of Yugoslavia. The communists managed the organisation and provided political commissars, while the insurgent military forces were led by former officers. The entire nation rejected the privileged position offered by its occupiers, rejected the capitulation in order to fight for Yugoslavia, together with "Russia".

The Operation Draufgänger was a German Wehrmacht military operation against the Yugoslav Partisans at the Montenegrin-Serbian border area, aimed at breaking the Partisan foothold on the Lim river which was a potential penetration point into Serbia. In turn, it was a Partisan counter-operation, known as the Andrijevica Operation. The operation began on 18 July on the Čakor–Gusinje–Andrijevica–Berane line, when Kampfgruppe E burnt down at least 16 villages and killed several hundreds inhabitants. From different directions, German troops attacked villages and a part approached Andrijevica, pushed out parts of two Partisan brigades, and then took over the town on 19 July and continued attacking. The staffs of the Partisan brigades assessed the combined German forces as inadequate and self-initiatively decided to attacks, resulting in great German losses. With the possibility to surround and destroy, the II Assault Corps gave the operational command on 23 July on general attack. From different directions the German troops were surrounded in the wider region of Murino on 24 July. On 28 July the Partisan 2nd, 5th and 17th divisions were ordered to move across the Ibar, which gave the opportunity for the 14th Regiment SS to break through Čakor towards Peć, while larger part of the 21st Division SS broke and many Albanians deserted. The German troops were decisively defeated, and the Partisans moved for action in Serbia. Operation Rübezahl followed.