Yugoslavian Partisans

The Partisans or the National Liberation Army,officially the National Liberation Army and Partisan Detachments of Yugoslavia,were a communist-led revolutionary and resistance movement in Yugoslavia during World War II. On 6 April 1941, the Kingdom of Yugoslavia was invaded from all sides by the Axis powers, primarily by German forces but including Italian, Hungarian and Bulgarian formations as well. During the invasion, Belgrade was bombed by the Luftwaffe. The invasion lasted little more than ten days, ending with the unconditional surrender of the Royal Yugoslav Army on 17 April. Besides being hopelessly ill-equipped when compared to the Wehrmacht, the Army attempted to defend all borders but only managed to thinly spread the limited resources available.

The terms of the capitulation were extremely severe, as the Axis proceeded to dismember Yugoslavia. Germany occupied northern Slovenia, while retaining direct occupation over a rump Serbian state and considerable influence over its newly created puppet state,[21] the Independent State of Croatia (NDH), which extended over much of today's Croatia and contained all of modern Bosnia and Herzegovina and Syrmia region of modern day Serbia. Mussolini's Italy gained the remainder of Slovenia, Kosovo, and large chunks of the coastal Dalmatia region (along with nearly all its Adriatic islands). It also gained control over the newly created Montenegrin puppet state, and was granted the kingship in the Independent State of Croatia, though wielding little real power within it. Hungary dispatched the Hungarian Third Army to occupy part of Serbian Vojvodina, including Baranja and Bačka, and annexed the Croatian area of Međimurje and the Slovene area of Prekmurje. Bulgaria, meanwhile, annexed nearly all of Macedonia, and small areas of eastern Serbia and Kosovo.The dissolution of Yugoslavia, the creation of the NDH, Independent State of Montenegro and Nedic's Serbia and the annexations of Yugoslav territory by the various Axis countries were incompatible with international law in force at that time.

The occupying forces instituted such severe burdens on the local populace that the Partisans came not only to enjoy widespread support but for many were the only option for survival. Early in the occupation, German forces would hang or shoot indiscriminately, including women, children and the elderly, up to 100 local inhabitants for every one German soldier killed. Furthermore, the country experienced a breakdown of law and order, with collaborationist militias roaming the countryside terrorizing the population. The government of the puppet Independent State of Croatia found itself unable to control its territory in the early stages of the occupation, resulting in a severe crackdown by the Ustaše militias and the German army. Amid the relative chaos that ensued, the Communist Party of Yugoslavia moved to organize and unite anti-fascist factions and political forces into a nation-wide uprising. The party, led by Josip Broz Tito, was banned after its significant success in the post-World War I Yugoslav elections and operated underground since. Tito, however, could not act openly without the backing of the USSR, and as the Molotov-Ribbentrop pact was still in force, he was compelled to wait.