Both the Yugoslav Partisans and the Chetnik movement initially resisted Defending the occupation .

The Battle Hostile_encounter of Loznica involved Cause_to_be_included an attack Attack on the German garrison of that town by the Jadar Chetnik Detachment on 31 August 1941 .

Operation Alfa ( ; ) was an offensive Military_operation carried out Military_operation in early October 1942 by Italian , Croatian and Chetnik forces against the communist-led Partisans in the Prozor region ( today in Bosnia and Herzegovina ) , then a part of the Croatian puppet state , the Independent State of Croatia ( NDH ) .

The operation was militarily inconclusive , and in the aftermath , Chetnik forces conducted Action mass killings Killing of civilians in the area .

The operation Military_operation was arranged Arranging between `` Generale designato d'armata '' ( acting General ) Mario Roatta , commander of the Italian Second Army , and Chetnik commander ( `` vojvoda '' ) Ilija Trifunović-Birčanin with approval of Chetnik leader Draža Mihailović .

The operation Military_operation was arranged Arranging between `` Generale designato d'armata '' ( acting General ) Mario Roatta , commander of the Italian Second Army , and Chetnik commander ( `` vojvoda '' ) Ilija Trifunović-Birčanin with approval of Chetnik leader Draža Mihailović .

Mihailović was captured Conquering by the communist authorities following the war Hostile_encounter , tried and found Know guilty for the Chetnik actions at Prozor ( among other charges Judgment_communication ) , and was sentenced Rewards_and_punishments to death Death and executed Killing .

On one side were the Chetnik detachments who considered themselves loyal to the royal government in exile and fought for the restoration of pre-war order .

The Chetnik leader Dragoljub Mihailović abandoned GiveUp the uprising in late October and entered Arriving into negotiations with the quisling government and the Germans in order to destroy the rival Partisans .

While there were 20,000 Chetnik insurgents located within the area of operations , they offered Giving no resistance to the German–NDH forces and many withdrew Escaping east across the Drina river to avoid Preventing_or_letting being engaged .

Encouraged Influence by Chetnik propaganda against Croats and Bosnian Muslims and repelled Defending by the sectarian left-wing policies and actions of the communists , many Serb peasant fighters were swayed Convincing to the Chetnik cause .

Encouraged Influence by Chetnik propaganda against Croats and Bosnian Muslims and repelled Defending by the sectarian left-wing policies and actions of the communists , many Serb peasant fighters were swayed Convincing to the Chetnik cause .

The Chetnik movement in eastern Bosnia , at best a confederacy of local warlords , was strengthened Cause_change_of_strength by mass defections Escaping from the Partisans .

After the offensive commenced Process_start on 20 September 1941 , the Partisans initially received Receiving assistance from local Chetnik formations in opposing Agree_or_refuse_to_act the Germans , but after weeks of disagreement Quarreling and low-level conflict Hostile_encounter between the two insurgent factions about how the resistance should proceed , the Chetniks launched an attack Attack on the Partisans in the towns of Užice and Požega on November 1 which resulted in the Chetniks being repulsed Defending .