Vojislav Lukačević (; 1908 – 14 August 1945) was a Serbian Chetnik commander in the Kingdom of Yugoslavia during World War II. At the outbreak of war, he held the rank of captain of the reserves in the Royal Yugoslav Army.

When the Axis powers invaded Yugoslavia in April 1941, Lukačević became a leader of Chetniks in the Sandžak region and joined the movement of Draža Mihailović. While the Chetniks were an anti-Axis movement in their long-range goals and did engage in marginal resistance activities for limited periods, they also pursued almost throughout the war a tactical or selective collaboration with the occupation authorities against the Yugoslav Partisans. They engaged in cooperation with the Axis powers to one degree or another by establishing modi vivendi or operating as auxiliary forces under Axis control. Lukačević himself collaborated extensively with the Italians and the Germans in actions against the Yugoslav Partisans until mid-1944.

In January and February 1943, while under the overall command of Major Pavle Đurišić, Captain Lukačević and his Chetniks participated in several massacres of the Muslim population of Bosnia, Herzegovina and the Sandžak. Immediately after this, Lukačević and his Chetniks participated in one of the largest Axis anti-Partisan operations of the war, Operation Weiss, where they fought alongside Italian, German and Croatian (NDH) troops. The following November, Lukačević concluded a formal collaboration agreement with the Germans and participated in a further anti-Partisan offensive, Operation Kugelblitz.

In February 1944, Lukačević travelled to London to represent Mihailović at the wedding of King Peter of Yugoslavia. After returning to Yugoslavia in mid-1944, and in anticipation of an Allied landing on the Yugoslav coast, he decided to break with Mihailović and fight the Germans, but this was short-lived, as he was captured by the Partisans a few months later. After the war, he was tried for collaboration and war crimes and sentenced to death. He was executed in August 1945.

Early life Lukačević was born in 1908 in Belgrade, Kingdom of Serbia to a wealthy banking family. At one point, he was employed by the French civil engineering company Société de Construction des Batignolles. He attained the rank of captain in the reserves of the Royal Yugoslav Army before World War II.

Invasion and occupation

After the outbreak of World War II, the government of Regent Prince Paul of Yugoslavia declared its neutrality. Despite this, and with the aim of securing his southern flank for the pending attack on the Soviet Union, Adolf Hitler began placing heavy pressure on the Kingdom of Yugoslavia to sign the Tripartite Pact and join the Axis. After some delay, the Yugoslav government conditionally signed the Pact on 25 March 1941. Two days later a bloodless coup d'état deposed Prince Paul and declared 17-year-old Prince Peter II of Yugoslavia of age. Following the subsequent German-led invasion of Yugoslavia and the Yugoslav capitulation 11 days later, Lukačević went into hiding in the forests. He soon returned to Belgrade, where he became aware of the activities of Draža Mihailović. He then left the capital with some other officers and soldiers to form a Chetnik detachment in the Novi Pazar area of the Sandžak region.

On 16 November 1941 Muslim forces from Novi Pazar and Albanian forces from Kosovo attacked Raška and quickly advanced toward the town. They were commanded by Aćif Hadžiahmetović. The situation for the defenders became very difficult, so Lukačević personally assisted in the defence of the town. On 17 November they stopped the advance of Hadžiahmetović's forces and forced them to retreat. On 21 November Lukačević took part in the attack of Chetnik forces on Novi Pazar. In the summer of 1942, Lukačević and his Chetniks fought the Partisans in Herzegovina. In October Lukačević personally led a Chetnik force in wider operations against remnants of the Yugoslav Partisans in the vicinity of Pljevlja. In caves near the village of Dobrilovana, his Chetniks killed two Partisans and captures twelve. The captured Partisans were handed over to the Chetnik command in Kolašin. These operations almost eliminated the Partisan presence in the Pljevlja region.

Massacres of Muslims In December 1942, Chetniks from Montenegro and Sandžak met at a conference in the village of Šahovići near Bijelo Polje. The conference was dominated by Montenegrin Serb Chetnik commander Major Pavle Đurišić and its resolutions expressed extremism and intolerance, as well as an agenda which focused on restoring the pre-war status quo in Yugoslavia implemented in its initial stages by a Chetnik dictatorship. It also laid claim to parts of the territory of Yugoslavia's neighbors. At this conference, Mihailović was represented by his chief of staff, Major Zaharije Ostojić, who had previously been encouraged by Mihailović to wage a campaign of terror against the Muslim population living along the borders of Montenegro and the Sandžak.

The conference decided to destroy the Muslim villages in the Čajniče district of Bosnia. On 3 January 1943, Ostojić issued orders to "cleanse" the Čajniče district of Ustaše-Muslim organisations. According to the historian Radoje Pajović, Ostojić produced a detailed plan which avoided specifying what would be done with the Muslim population of the district. Instead, these instructions were to be given orally to the responsible commanders. Delays in the movement of Chetnik forces into Bosnia to participate in the anti-Partisan Operation Weiss offensive alongside the Italians enabled Chetnik Supreme Command to expand the planned "cleansing" operation to include the Pljevlja district in the Sandžak and the Foča district of Bosnia. A combined Chetnik force of 6,000 was assembled, divided into four detachments, each with its own commander. Lukačević commanded a force of 1,600, consisting of Chetniks from Višegrad, Priboj, Nova Varoš, Prijepolje, Pljevlja and Bijelo Polje. His force formed one of the four detachments, and Mihailović ordered that all four detachments be placed under the overall command of Đurišić.

In early February 1943, during their advance northwest into Herzegovina in preparation for their involvement in Operation Weiss, the combined Chetnik force massacred large numbers of the Muslim population in the targeted areas. In a report to Mihailović dated 13 February 1943, Đurišić reported that the Chetnik forces under his command had killed about 1,200 Muslim combatants and about 8,000 old people, women, and children, and destroyed all property except for livestock, grain and hay, which they had seized. Đurišić reported that:

The orders for the "cleansing" operation stated that the Chetniks should kill all Muslim fighters, communists and Ustaše, but that they should not kill women and children. According to Pajović, these instructions were included to ensure there was no written evidence regarding the killing of non-combatants. On 8 February, one Chetnik commander made a notation on their copy of written orders issued by Đurišić that the detachments had received additional orders to kill all Muslims they encountered. On 10 February, Jovan Jelovac, the commander of the Pljevlja Brigade, who was subordinated to Lukačević, told one of his battalion commanders that he was to kill everyone, in accordance with the orders of their highest commanders. According to the historian Professor Jozo Tomasevich, despite Chetnik claims that this and previous "cleansing actions" were countermeasures against Muslim aggressive activities, all circumstances point to it being Đurišić's partial achievement of Mihailović's previous directive to clear the Sandžak of Muslims.

After first part of operations, Lukačević was given the duty to command the 'liberated territories'. In a meeting with representative of Italian command from Pljevlja on February 10, Lukačević stated that his goal is to 'eliminate or expel all Muslims in Pljevlja and Čajniče Okrugs'. Muslim collaborationist leaders petitioned Italians to allow the return of Muslim refugees. Lukačević wrote to Italian command that if they handed him the refugees he would 'solve the problem with them in couple of hours', so Italians rejected Lukačević proposal and it was clear that Muslims would not return to their homes any time soon. First significant return was seen after Operation Schwarz in June 1943, as it weakened Chetnik forces in the region, but Lukačević still had orders to prevent return of Muslims in his area of command.

Operation Weiss Lukačević and his Chetniks were drawn into closer collaboration with the Axis during the second phase of Operation Weiss, which took place in the Neretva and Rama river valleys in late February 1943 and was one of the largest anti-Partisan offensives of the war. Despite the fact that the Chetniks were an anti-Axis movement in their long-range goals and did engage in marginal resistance activities for limited periods, their involvement in Operation Weiss is one of the most significant examples of their tactical or selective collaboration with the Axis occupation forces. In this instance, the participating Chetniks received Italian logistic support and included those operating as legalised auxiliary forces under Italian control. During this offensive, between 12,000 and 15,000 Chetniks fought alongside Italian forces, and Lukačević and his Chetniks also fought alongside German and Croatian troops against the Partisans.

In February 1943, during the second phase of Operation Weiss, Lukačević and his Chetniks jointly held the town of Konjic on the Neretva river alongside Italian troops. After being reinforced by German and NDH troops and some additional Chetniks, the combined force held the town against concerted attacks by the Partisans over a seven-day period. The first attack was launched by two battalions of the 1st Proletarian Division on 19 February and was followed by repeated attacks by the 3rd Assault Division between 22 and 26 February. Unable to capture the town and its critical bridge across the Neretva, the Partisans eventually crossed the river downstream at Jablanica. Ostojić was aware of Lukačević's collaboration with the Germans and NDH troops at Konjic but, at his trial, Mihailović denied that he himself was aware of it, claiming that Ostojić controlled the communications links and kept the information from him. During the fighting at Konjic, the Germans also supplied Lukačević's troops with ammunition. Both Ostojić and Lukačević were highly critical of what they described as Mihailović's bold but reckless tactics during Operation Weiss, indicating that Mihailović was largely responsible for the Chetnik failure to hold the Partisans at the Neretva.

In September 1943, immediately following the Italian capitulation, the Italian Venezia Division, which was garrisoned at Berane, surrendered to the British Special Operations Executive Colonel S.W. "Bill" Bailey and Major Lukačević, but Lukačević and his troops were unable to control the surrendered Italians. Partisan formations arrived in Berane shortly afterward and were able to convince the Italians to join them.

Collaboration with the Germans In September 1943, United States Lieutenant Colonel Albert B. Seitz and Lieutenant George Musulin parachuted into the Territory of the Military Commander in Serbia, along with British Brigadier Charles Armstrong. In November, Seitz and another American liaison officer, Captain Walter R. Mansfield, conducted a tour of inspection of Chetnik areas, including that of Lukačević. During their tour they witnessed fighting between Chetniks and Partisans. Due to their relative freedom of movement, the Americans assumed that the Chetniks controlled the territory they moved through. However, despite the praise that Seitz expressed for Lukačević, the Chetnik leader was collaborating with the Germans at the same time that he was hosting the visiting Americans.