| Operation Swath-10 | |||||||
|---|---|---|---|---|---|---|---|
| Part of theCroatian War of Independence | |||||||
Western Slavonian towns on map of Croatia (JNA-held area in late December 1991 is in red) | |||||||
| |||||||
| Belligerents | |||||||
| Commanders and leaders | |||||||
| Units involved | |||||||
| Western Slavonia Territorial Defense | |||||||
| Strength | |||||||
| 2,647 troops 48 artillery pieces 12armoured vehicles | c. 1,750 troops 22 artillery pieces 8 armoured vehicles | ||||||
| Casualties and losses | |||||||
| 5 killed Dozens wounded | 24 killed | ||||||
| 22 Serb civilians killed, 4,000 displaced | |||||||
Operation Swath-10 (Croatian:Operacija Otkos-10) was a military offensive undertaken by theCroatian Army (Hrvatska vojska, or HV) against theSAO Western SlavoniaTerritorial Defense Forces onBilogora Mountain in westernSlavonia. Occurring from 31 October to 4 November 1991, during theCroatian War of Independence, the operation was a Croatian victory and its success set the stage for follow-up advances by Croatian forces onPapuk Mountain in Operation Papuk-91 in late November and December. By the end of the year the HV gained control of Papuk, securing transport routes between eastern Slavonia and the rest ofCroatia.
The offensives were accompanied by the displacement of most of theCroatian Serb population of the area captured by the HV. The refugees initially fled toBosnia and Herzegovina, but the majority were soon settled in theJNA-heldBaranja region of eastern Croatia. The offensive provoked accusations that Croatian troops had committedethnic cleansing andcivil-rights abuses. These accusations were contested by theEuropean Community Monitor Mission (ECMM). A month after the operation, the retreating paramilitary unit known as theWhite Eagles perpetrated theVoćin massacre, and itswar crimes were prosecuted at theInternational Criminal Tribunal for the former Yugoslavia.
During the1991 Yugoslav campaign in Croatia, the 5th (Banja Luka) Corps of theYugoslav People's Army (Jugoslovenska Narodna Armija, or JNA) was tasked with advancing north through westernSlavonia fromOkučani toDaruvar andVirovitica and with a secondary drive from Okučani towardsKutina.[1] This was essentially consistent with the line expected to be reached by the main thrust of the JNA, advancing from eastern Slavonia in about a week. The link was designed to facilitate a further advance west, toZagreb andVaraždin.[2] The corps had deployed abattlegroup of the 265th Mechanised Brigade near Okučani, supporting an advance which began on 21 September and reached thePapuk Mountains. The corps received one artillery and two motorised brigades as reinforcements during the advance, but the desertion and morale problems experienced by the JNA elsewhere also existed in the Banja Luka Corps.[3]
The JNA was stopped by theCroatian National Guard (Zbor Narodne Garde, or ZNG) betweenNovska,Nova Gradiška andPakrac, althoughSAO Western SlavoniaTerritorial Defense Forces (Teritorijalna odbrana, or TO) units took up positions on theBilogora and Papuk north of Pakrac (near Virovitica andSlatina) with no JNA support.[4] The capture ofIvanovo Selo, seven kilometres (4.3 miles) east ofGrubišno Polje and eight kilometres (5.0 miles) north of Daruvar, on 21 September marked the territorial peak of the TO-held area on the Bilogora. The village was recaptured by the ZNG the same day, with seven dead and fifteen wounded.[5]
On 1 October, the Banja Luka Corps began probing attacks in the region before a major effort with most of the corps three days later. The advance established defensive positions just outside Novska and Nova Gradiška.[6] On 6 October Pakrac was briefly isolated when the JNA capturedBatinjani four kilometres (2.5 miles) (northwest of the town), blocking the last road available to supply the town. The ZNG recaptured the village the same day, driving the JNA back six kilometres (3.7 miles) at a cost of 22 killed.[5] The JNA capturedJasenovac on 8 October;Lipik and part of Pakrac were captured four days later.[6] By then, the JNA offensive in western Slavonia had lost momentum[7] and the ZNG made minor advances north of Novska and west of Nova Gradiška on 13 and 16 October.[5] Croatian authorities no longer considered the war situation critical, issuing an order to plan a counter-offensive for 15 October.[8] On 29 October, the ZNG launchedOperation Hurricane-91 against positions held by the JNA and the TO near Novska and Nova Gradiška.[9]
The TO forces in the Bilogora Mountain region were officially part of the 28th Partisan Division, commanded byColonel Nikola Marić.[10] In reality, they comprised about 1,750 soldiers, eightarmoured vehicles, ten cannons and twelve mortars.[11] The TO force was organised into two battalions, headquartered in the villages ofMali Grđevac and Velika Peratovica and commanded by Rade Čakmak.[12] North of the TO-held area, the ZNG deployed the 127th Infantry Brigade in the Virovitica area.[13] In the Grubišno Polje area south of the Bilogora, the ZNG force was subordinate to the 57th Independent Battalion (later renamed the 77th Independent Battalion).[14] The attacking ZNG force, under Colonel Franjo Kovačević,[15] consisted of 2,647 troops supported by twelve armoured vehicles, eighteen cannons and twenty 120-millimetre (4.7 in) mortars—surpassing the defending TO force in every respect except for theclose air support of the TO by theYugoslav Air Force. The ZNG originally planned to deploy the 105th Infantry Brigade and theOmega special-police company fromBjelovar, but the units were needed elsewhere and unavailable for the offensive.[11]
Operation Swath-10 (also known as Bilogora '91)[16] was planned by the Croatians to regain control of theVirovitica–Lončarica–Grubišno Polje road, cutting off and destroying the TO forces deployed in the area of the road (the northernmost part of western Slavonia captured by the TO or the JNA). Those objectives were also designed to deny the Banja Luka Corps support if it attempted to break through towards Virovitica; control the last remaining supply route between Zagreb and Slavonia; shorten the Croatian defensive positions, and improve troop and civilian morale.[17] The offensive was originally scheduled for 15 October, but was postponed for two weeks due to the unavailability of the 105th Infantry Brigade and the special police. The plan of operation called for the ZNG to first cut off the two TO battalions on the Bilogora Mountain within 48 hours, with the second stage of the offensive destroying the trapped TO force.[18] The operation was authorised by Colonel Miroslav Jezerčić, commander of Bjelovar Operational Zone, on 7 October.[19]
The offensive was launched at 6 am on 31 October, with a 50-minuteartillery bombardment followed by a ZNG advance in three groups:[19] the 57th Independent Battalion from the south, the 127th Infantry Brigade from the north and the 1st Battalion of the 127th Infantry Brigade from the northwest.[20] That day the ZNG captured the villages ofVelika Barna,Gornja Kovačica andZrinska, northwest of the Grubišno Polje–Veliki Grđevac road, securing Grubišno Polje. The ZNG also advanced along the Virovitica–Grubišno Polje road, arriving at the outskirts of Mala Peratovica (four kilometres (2.5 miles) east of Grubišno Polje) and approachingLončarica (eleven kilometres (6.8 miles) south of Virovitica).[13] The TO forces put up a strong resistance (especially near Lončarica), although the battlefield situation was described as hopeless. The TO requested close air support from the Yugoslav Air Force,[21] and four to six aircraft were deployed in response.[11]
On 1 November the ZNG conducted mopping-up operations in the areas northwest of Grubišno Polje, and the following day the TO force began retreating towards Papuk Mountain. Lončarica and Dapčevački Brđani (a village about two kilometres (1.2 miles) northeast of Mala Peratovica, along the Virovitica–Grubišno Polje road) were captured by the Croatian force on 3 November after they overcame strong TO resistance.[13] That day, the ZNG was renamed theCroatian Army (Hrvatska vojska, or HV).[22] After the villages were captured, HV forces advancing from Grubišno Polje and Virovitica met; the HV captured the village of Velika Peratovica, which was isolated by the advances along the Virovitica–Grubišno Polje road and northwest of Grubišno Polje on the first day of the offensive. On 4 November the operation was declared finished, after the HV secured the area.[13]

On 10 November the 57th Independent Battalion advanced against the TO in Veliki Miletinac (east of the area captured in Operation Swath-10), capturing the village the same day. The neighbouring Mali Miletinac was captured by the HV the following day, and on 12 November the HV captured the villages of Bastajski Brđani and Rekići. Two days later the TO counterattacked, killing nine HV troops and wounding about ten more, but the HV defence held. Another effort to recapture Bastajski Brđani was made by the TO, reinforced with 50 paramilitaryWhite Eagles. It failed (despite being well prepared and supported by artillery) because the defending HV force was alerted bysignals intelligence of the attack and reinforced. The White Eagles lost 46 killed in the battle.[23]
Operation Papuk-91 was planned to follow Operation Swath-10, advancing south from the Virovitica–Osijek road and clearing the Papuk andPsunj mountains of TO forces[24] (elements of the 28th Partisan Division).[10] The offensive was approved by Jezerčić at a 23 November meeting in Slatina attended by HVInspector GeneralMartin Špegelj, Colonel Miljenko Crnjac (commanding officer of the 123rd Infantry Brigade), Colonel Đuro Dečak (commanding officer of the 127th Infantry Brigade), Colonel Josip Černi (commanding officer of the 136th Infantry Brigade) and commanders of other units tasked with its support.[24]
The operation was launched on 28 November; the HV advanced across a front spanning Grubišno Polje andOrahovica, nearly 60 kilometres (37 miles) east.[24] On 2 December a detachment of the 123rd Infantry Brigade, en route to relieve troops manning a base on the Papuk, was ambushed with eleven soldiers killed. On 10 December the HV advanced to the Psunj Mountain area north of Nova Gradiška in an offensive,codenamed Gradina, which captured the villages of Šnjegavić, Sinlije, Golobrdac, Vučjak Čečavski, Ruševac, Jeminovac, Čečavac and Opršinac. The advance improved the safety of the Nova Gradiška–Požega road and secured the right flank of the Nova Gradiška axis of Operation Hurricane-91.[25]
From 12 to 15 December the HV captured a cluster of villages aroundĐulovac, southeast of the area captured in Operation Swath-10. The HV units approaching from the east capturedVoćin, about ten kilometres (6.2 miles) southeast of Đulovac, on 14–15 December.[25] Voćin and Đulovac were badly damaged by the retreating TO and paramilitary White Eagles,[26] and the latter killed43 civilians in Voćin on 13 December.[27][28] The victims' bodies were mutilated and left unburied, presumably as a warning to others.[29]
On 16 December the HV (in an operation codenamed Sokolina) captured the villages ofGornji Vrhovci,Kamenski Vučjak and Kamenski Šušnjari, about 15 kilometres (9.3 miles) south of Voćin and 10 kilometres (6.2 miles) west ofVelika; this restricted the TO forces to the southwestern slopes of Papuk Mountain and Psunj Mountain further south. The following day, the HV capturedNovo Zvečevo and a TO supply depot in the village (halfway between Voćin and Kamenski Vučjak) in an attack codenamed Johanesberg.[25] On 18 December the HV advanced southwest from Kamenski Vučjak (in an advance codenamed Laništa), capturing the villages ofStriježevica, Bogdašić, Amatovci and Kamenski Šeovci and coming within one kilometre (0.62 miles) of the village of Kamenska (on the Pakrac–Požega road). Over the following three days, the HV performed mopping-up operations in the area.[30]
On 21 December, the HV launched an unsuccessful attack (codenamed Prkos) on Kamenska and the adjacent village ofMijači. The TO withdrew from the area north of Kamenska (including the village of Sažije on 24 December), retreating from Kamenska and Mijači the next day. HV forces deployed in the Pakrac area (west of the Papuk and the Psunj), advanced east to support Operation Papuk-91 (capturing the villages ofDereza, Gornji Grahovljani, Donji Grahovljani,Kusonje andŠpanovica on 24–25 December) and left less than 15 kilometres (9.3 miles) of the Pakrac–Požega road separating HV units advancing from the west and east.[30] Operation Papuk-91 ended on 26 December, when forces of the 123rd, the 127th and the 136th Brigades met atBučje; the final day's advance was codenamed Velebit.[31]
Five HV soldiers were killed in the operation and dozens were wounded.[32] Twenty-four JNA personnel and Croatian Serb rebels were also killed, as were 22 Serb civilians. A further 17 Serb civilians were killed in the weeks preceding the operation,[33] in which Croatian forces secured 370 square kilometres (140 square miles) of western Slavonia (including 21 villages). Although the HV secured the Virovitica–Grubišno Polje road, it failed to trap the TO troops deployed to the area. This was later attributed to insufficient manpower: the unavailability of the 105th Infantry Brigade or the 73rd Independent (Garešnica) Battalion, which were deployed in Pakrac. The HV positions set the stage for further advances against theSAO Western Slavonia in Operation Papuk-91.[34] Some sources conflate Operations Swath-10 and Papuk-91, describing the latter as part of Operation Swath-10.[35] Operation Papuk-91 eliminated the threat to the road connecting eastern Slavonia and Zagreb; the TO forces were pushed south, placing the road out of artillery range.[36] In Operation Papuk-91, the HV captured 110 settlements[24] and 1,230 square kilometres (470 square miles) of territory.[20]
In 2008, a monument to HV troops participating in the offensive was unveiled in Grubišno Polje.[37] Another monument was erected on Papuk Mountain to the 11 soldiers from the 123rd Infantry Brigade who were ambushed in Operation Papuk-91 on 2 December 1991.[38] Operations Swath-10, Papuk-91 and Hurricane-91 (implemented in western Slavonia in late 1991) are considered the first offensive liberation operations in the Croatian War of Independence.[39]
TheInternational Criminal Tribunal for the former Yugoslavia (ICTY) chargedVojislav Šešelj with a number ofwar crimes, including the killings by the paramilitary White Eagles in Voćin on 13 December. Although the trial ended in 2012, as of August 2013[update] the verdict was pending.[40][41]Slobodan Milošević, the president of Serbia at the time of the killings, was also tried by the ICTY for the crimes in Voćin, but died before his trial ended.[42]
About 4,000Croatian Serb civilians fled the area affected by Operation Swath-10.[43] According to Serbian sources, the population began to evacuate on the first day of the offensive; by the second day, about 800 vehicles had enteredBosnia and Herzegovina. The retreating columns included men of military age who refused to fight.[44] A substantial number of refugees settled in Baranja, in houses owned by displacedCroats.[45] Based on reports of fleeing civilians, theYugoslav government accused Croatia ofethnic cleansing and other civil-rights violations. Deputy Prime Minister Aleksandar Mitrović wrote to theEuropean Community Monitor Mission (ECMM), accusing Croatia of personal and property damage and the displacement of Serb civilians. Although the accusations were countered by evacuation plans made by SAO Western Slavonia authorities on 25 October[46] and the testimony of civilians remaining in the area (that the TO ordered the population to flee, claiming that "theUstaše are coming [...] and killing every Serb"),[47] Serbian mediaextensively reported alleged atrocities. Reports compared the Croatian offensive to theWorld War IImassacres committed by the Independent State of Croatia.[48] On 3 November, thePresidency of Yugoslavia condemned the offensive, citing the destruction of 18 Serb villages, and the following day theNational Assembly of Serbia appealed to the international community for help.[49]
In response to the situation (and a request from the Presidency of Yugoslavia) an ECMM team toured the area affected by the offensive on 6 November, targeting locations where media reports indicated atrocities; these included Velika Peratovica, Mala Peratovica, Gornja Rašenica, Donja Rašenica and Lončarica. The 6 November ECMM report refuted the accusations; although the team found only one Serb couple remaining in the area, they denied claims that the HV mistreated civilians left behind. The ECMM team reported no systematic destruction of houses, although a number of structures had artillery-bombardment damage and a small number of houses, farms andhaystacks were recently torched. The team was unable to determine if the HV was to blame, if the villagers avenged SAO Western Krajina leaders or if the destruction was a result of ascorched earth policy by the retreating force.[50]
The HV offensives in western Slavonia conducted in late 1991 (Operations Hurricane-10, Swath-10 and Papuk-91) created a total of 20,000 Serb refugees. They fled the area when the JNA ordered Croatian Serb forces to withdraw,[51] and were settled in the JNA-held Baranja region of eastern Croatia.[52] The refugee resettlement coincided with Croatian Serb efforts to change the ethnic composition of theDanube area seized in late 1991, providing a secondary motive for the expulsion of non-Serb civilians.[53]
A 3 January 1992 ceasefire allowed the implementation of theVance plan, which protected civilians in areas designated asUN Protected Areas (UNPAs) and deployed UN peacekeepers in Croatia.[54] One of the UNPAs defined by the plan, UNPA Western Slavonia, encompassed parts of the municipalities of Novska and Nova Gradiška and all of Daruvar, Grubišno Polje and Pakrac. This UNPA covered the area held by the JNA on 3 January, additional territory to the north (recaptured by the HV in late 1991) and towns never under SAO Western Slavonia control (such as Grubišno Polje and Daruvar).[55] The peacekeeping force (United Nations Protection Force, or UNPROFOR), initially expected to be 10,000-strong,[56] began its deployment on 8 March.[57]