Prelude In early October, the operation was launched by the Italians targeting Partisans located northwest of the middle part of the
Neretva River. Elements of the
18th Infantry Division Messina, commanded by
Generale di divisione (
Divisional general)
Guglielmo Spicacci took part, consisting of the 29th Battalion of the 4th
Bersaglieri Regiment and the 2nd Battalion of the 94th Regiment. Between 3,000 and 5,500 Chetniks took part in the operation under the command of
Dobroslav Jevđević and
Petar Baćović. Partisan sources reported 4,000 soldiers of the Italian 6th Army Corps and 5,000 Chetniks of the
Trebinje,
Nevesinje, and
Romanija Corps as being involved. NDH units involved included the 7th and 15th Infantry Regiments, as well as the
NDH Air Force. The operation was coordinated with Germans and NDH armed forces located near northern Partisan territory in the direction of
Banja Luka. The Chetniks arrived by train from
Dubrovnik and
Metković and by Italian trucks from Nevesinje. On 2–3 October they arrived in
Mostar and left on 3 October. The same day, they killed one villager and committed mass looting in the village of
Raška Gora, north of Mostar. In the village of
Gorani, southwest of Mostar, three villagers were killed and, as elsewhere, they carried out looting and burning. The next day they were in
Drežnica where Jevđević gave a speech that "the chief enemy of Serbs are the Partisans, then the Ustaše. They need to be ruthlessly destroyed and the other left alone". Subsequently, the Chetniks killed between 62 and 142 people, looted, and burned buildings in the town. In total, some 200 Croats and Muslims were killed by Chetniks in the Mostar area immediately prior to Operation Alfa.
Operation On 4–5 October the Chetniks crossed the Neretva River in
Konjic and headed, as did the Italians, towards Prozor,
Šćit,
Gornji Vakuf,
Donji Vakuf, and on to
Bugojno,
Komar, and
Travnik where the headquarters of the Partisan
5th Montenegrin and the
10th Herzegovinian Brigades were situated. The offensive was launched from three directions with light and heavy artillery and a large number of tanks and trucks converging. Three battalions of the 10th Herzegovinian Brigade, commanded by
Vlado Šegrt, intended to assemble near Prozor, but withdrew and escaped on 6 October before the arrival of the Italian–Chetnik forces. The Partisan battalions estimated that 1,200–1,500 soldiers of the Italian army and about 3,000–3,500 Chetniks were approaching, while they had a little over 300 men, a ratio of approximately 1:15. On 7–8 October the Italians heavily bombed Prozor with artillery and airplanes and entered the town on 8 October. On the same day, Mihailović informed his commanders in Herzegovina that "now is the definite time to wipe out the communists" and to be as tactical as possible with the Muslims and Croats. The nature of these tactics required the Muslims to "only be organized under the command of our [Chetnik] military leaders and in our struggle against the Ustaše and the communists with complete loyalty to the Serb population to repair the shameful role they've played since the capitulation of Yugoslavia up to today". He also called for the Muslims to "take part in the liquidation of those Muslims who still today work against the Serb people". As for the Croats: "what will become of the borders of the Croatian unit and what rights the Croats will have in the new state of the future will depend solely on them". He explained that "if they continue to be inactive, there will be no force that will be able to protect them from the retribution of the Serb people, so let them guide themselves in accordance with that" and announced that after the "liquidation of communists, they will be able to liquidate the Ustaša". On 14–15 October, the Chetniks, acting on their own, massacred over five hundred Croats and Muslims and burnt numerous villages in the process of the operation on the suspicion that they "harbored and aided the Partisans". According to the historian
Jozo Tomasevich, incomplete data shows 543 civilians were massacred. At least 656 victims are known by name while another source says about 848 people, mainly "children, women, and the elderly", were killed. Historian
Ivo Goldstein estimates 1,500 were massacred in total and attributes the discrepancy "due to the fact that the estimates refer to different territories". The historians
Antun Miletić and
Vladimir Dedijer place the figure killed at 2,500. In the following days, around 2,000 Chetniks were in the district of Prozor. According to Hoare, the Ustase complained about the burning of Croat and Muslim villages, and the associated killings of civilians, and this compelled the Italians to discipline the Chetniks and disband some of their units. According to Partisan sources, the Chetniks moved southeast to the Neretva River and Mostar at the request of Italian officers. These sources claim that this was done because Chetnik and Italian atrocities caused great resentment in the local population, especially within the Croatian Home Guard, which felt obliged to intervene militarily in such instances. Chetnik commanders argued that this move was initiated by the Germans to prevent the Chetniks from heading west towards Mount
Dinara. After the killings, the Muslim Chetnik leader
Ismet Popovac arrived in the town to console the local population and to advise the Chetniks there against committing further atrocities. He also attempted to convince local Muslims to join the Chetnik ranks but was unsuccessful due to the extent of Chetnik atrocities against the Muslim population. On 23 October, Baćović reported to Mihailović that "in the operation of Prozor we slaughtered more than 2,000 Croats and Muslims. Our soldiers returned enthusiastic."
Borba, a Partisan newspaper, also reported that about 2,000 were "killed by the Chetniks in Croatian and Muslim villages of Prozor, Konjic, and Vakuf". The report also mentions that "the districts of Prozor and Konjic have hundreds of slaughtered and murdered women and children as well as burnt houses". ==Aftermath==