
The 1991 protest in Split was a street protest against the Yugoslav People's Army held in Split, Croatia on 6 May 1991. The protest was organised by the Croatian Trade Union Association in the Brodosplit Shipyard and joined in by workers from other companies in the city and other residents of Split after radio broadcast appeals for help while the protesters marched through the streets. Ultimately, the protest drew 100,000 supporters.

The Baćin massacre was the killing of 83 civilians just outside the village of Baćin, near Hrvatska Dubica, committed by Croatian Serb paramilitaries. The killings took place on 21 October 1991 during the Croatian War of Independence. Most of the civilians were Croats, but they also included two ethnic Serbs, taken from Hrvatska Dubica, Baćin and the nearby village of Cerovljani. The civilians were killed in the area of Krečane, at the very bank of the Una River, and their bodies were left unburied for two weeks. Most of them were subsequently bulldozed into a shallow mass grave, while a number of the bodies were thrown into the river.
The Battle of the Barracks was a series of engagements that occurred in mid-to-late 1991 between the Croatian National Guard and the Croatian police on one side and the Yugoslav People's Army on another. The battle took place around numerous JNA posts in Croatia, starting when Croatian forces blockaded the JNA barracks, weapons storage depots and other facilities. It formally began on 14 September; its objective was to neutralise the JNA positions in ZNG-held territory and to secure arms and ammunition supplies for the poorly equipped ZNG.
The Battle of Gospić was fought in the environs of Gospić, Croatia, from 29 August until 22 September 1991 during the Croatian War of Independence. The battle pitted the Yugoslav People's Army (JNA), stationed in five barracks in the town, and paramilitary elements of the Serbian Guard against the Croatian National Guard (ZNG), police forces based in Gospić and police reinforcements from elsewhere in Croatia. Fighting in the eastern districts of Gospić, controlled by JNA forces with supporting artillery, was largely static but the balance shifted in favor of the Croatian forces following the capture of several JNA depots and barracks on 14 September. The remaining barracks were captured by 20 September leading to the expulsion of the JNA and Serbian Guard forces from the town.

The Battle of Šibenik, also known as the September War, was an armed conflict fought between the Yugoslav People's Army, supported by the Croatian Serb-established Serbian Autonomous Oblast of Krajina, and the Croatian National Guard, supported by the Croatian Police. The battle was fought to the north and west of the city of Šibenik, Croatia on 16–22 September 1991, during the Croatian War of Independence. The JNA's initial orders were to relieve Croatian siege of their barracks in the city and isolate the region of Dalmatia from the rest of Croatia. The JNA's advance was supported by the Yugoslav Air Force and the Yugoslav Navy.

The Siege of Bjelovar Barracks, also known by the codename Operation Bilogora, was the blockade and capture of the Yugoslav People's Army (JNA) barracks and other facilities in and around the city of Bjelovar, a part of the JNA 32nd (Varaždin) Corps, during the Croatian War of Independence. A general blockade of the JNA facilities in Croatia was ordered on 14 September 1991, and it continued until 29 September when the JNA garrison was captured by Croatian forces. Its capture occurred one week after the bulk of the 32nd Corps surrendered. It was part of the Battle of the Barracks—an effort by Croatian armed forces to isolate JNA units based at barracks in Croatia, or capture the barracks to provide arms for Croatia's nascent army.

The bombing of Banski dvori was a Yugoslav Air Force strike on the Banski dvori in Zagreb—the official residence of the President of Croatia at the time of the Croatian War of Independence. The airstrike occurred on 7 October 1991, as a part of a Yugoslav Air Force attack on a number of targets in the Croatian capital city. One civilian was reported killed by strafing of the Tuškanac city district and four were injured.

The Battle of Borovo Selo of 2 May 1991, known in Croatia as the Borovo Selo massacre and in Serbia as the Borovo Selo incident, was one of the first armed clashes in the conflict which became known as the Croatian War of Independence. The clash was precipitated by months of rising ethnic tensions, violence, and armed combat in Pakrac and at the Plitvice Lakes in March. The immediate cause for the confrontation in the heavily ethnic Serb village of Borovo Selo, just north of Vukovar, was a failed attempt to replace the Yugoslav flag in the village with the flag of Croatia. The unauthorised effort by four Croatian policemen resulted in the capture of two by a Croatian Serb militia in the village. To retrieve the captives, the Croatian authorities deployed additional police, who drove into an ambush. Twelve Croatian policemen and one Serb paramilitary were killed before the Yugoslav People's Army (JNA) intervened and put an end to the clashes.

The Brioni Agreement or Brioni Declaration is a document signed by representatives of Slovenia, Croatia, and Yugoslavia under the political sponsorship of the European Community (EC) on the Brijuni Islands on 7 July 1991. The agreement sought to create an environment in which further negotiations on the future of Yugoslavia could take place. However, ultimately it isolated the federal prime minister Ante Marković in his efforts to preserve Yugoslavia, and effectively stopped any form of federal influence over Slovenia. This meant the Yugoslav People's Army (JNA) would focus on combat in Croatia, creating a precedent of redrawing international borders and staking the EC's interest in resolving the Yugoslav crisis.

The Bruška massacre took place on 21 December 1991 in Bruška, a small village near the Croatian town of Benkovac when Serbian paramilitaries executed 10 civilians in the hamlet of Marinovići. Nine were members of the Marinović family and one was a Serb neighbor. They were led out of the house after playing cards and shot on the spot by members of a paramilitary group called "Knindže".

The Dalj massacre was the killing of 56 or 57 Croats in Dalj, Croatia on 1 August 1991, during the Croatian War of Independence. In addition to civilian victims, the figure includes 20 Croatian policemen, 15 Croatian National Guard troops and four civil defencemen who had been defending the police station and water supply building in the village. While some of the policemen and the ZNG troops died in combat, those who surrendered were killed after they became prisoners of war. They tried to fight off an attack by the Croatian Serb SAO Eastern Slavonia, Baranja and Western Syrmia Territorial Defence Forces, supported by the Yugoslav People's Army and the Serb Volunteer Guard paramilitaries. The SAO SBWS was declared an autonomous territory in eastern Croatia following the Battle of Borovo Selo just to the south of Dalj.

The Battle of the Dalmatian Channels was a three-day confrontation between three tactical groups of Yugoslav Navy ships and coastal artillery, and a detachment of naval commandos of the Croatian Navy fought on 14–16 November 1991 during the Croatian War of Independence. On 14 November, the commandos torpedoed the Mirna-class patrol boat PČ-176 Mukos close to the island of Brač in the Split Channel of the Adriatic Sea, prompting a Yugoslav naval bombardment of Brač and Šolta Island the same day. The drifting Mukos was salvaged by Croatian civilian boats and beached at Nečujam bay.

Libertas convoy was a partly grassroots humanitarian action aimed at breaking through Yugoslav People's Army's naval blockade of the Croatian city of Dubrovnik during the Croatian War of Independence and the siege of Dubrovnik in 1991. The purpose of the convoy was to bring supplies to Dubrovnik's inhabitants who, in connection with the siege, were living without electricity and access to fresh drinking water, food and medicine. The convoy's name 'Libertas' alludes to the Latin word for freedom which is the historical motto of Dubrovnik.
The Siege of Dubrovnik was a military engagement fought between the Yugoslav People's Army (JNA) and Croatian forces defending the city of Dubrovnik and its surroundings during the Croatian War of Independence. The JNA started its advance on 1 October 1991, and by late October, it had captured virtually all the land between the Pelješac and Prevlaka peninsulas on the coast of the Adriatic Sea, with the exception of Dubrovnik itself. The siege was accompanied by a Yugoslav Navy blockade. The JNA's bombardment of Dubrovnik, including that of the Old Town—a UNESCO World Heritage Site—culminated on 6 December 1991. The bombardment provoked international condemnation, and became a public relations disaster for Serbia and Montenegro, contributing to their diplomatic and economic isolation, as well as the international recognition of Croatia's independence. In May 1992, the JNA retreated to Bosnia and Herzegovina, less than 1 kilometre from the coast in some places, and handed over its equipment to the newly formed Army of Republika Srpska (VRS). During this time, the Croatian Army (HV) attacked from the west and pushed back the JNA/VRS from the areas east of Dubrovnik, both in Croatia and in Bosnia and Herzegovina, and by the end of May linked up with the HV unit defending the city. Fighting between the HV and Yugoslav troops east of Dubrovnik gradually died down.

The Erdut killings were a series of murders of 37 Hungarian and Croat civilians in the village of Erdut, Croatia committed by Croatian Serb forces and Serb Volunteer Guard paramilitaries between November 1991 and June 1992, during the Croatian War of Independence. Twenty-two Hungarians and 15 Croats were killed. The first killings occurred on 10 November 1991, when twelve civilians died. Eight more were killed over the following several days. Five more civilians were killed on 10 December, and another seven on 16 December. Four others were killed on 21 February 1992 and the final one was killed on 3 June. The bodies of these victims were either buried in mass graves or thrown into nearby wells.

The Gornje Jame massacre was the killing of fifteen Croat civilians in Gornje Jame, a village near Glina, by the Serbian paramilitary force called Šiltovi.

The Gospić massacre was the mass killing of 100–120 predominantly Serb civilians in Gospić, Croatia during the last two weeks of October 1991, during the Croatian War of Independence. The majority of the victims were ethnic Serbs but also included some Croats, arrested in Gospić and the nearby coastal town of Karlobag. Most of them were arrested on 16–17 October. Some of the detainees were taken to the Perušić barracks and executed in Lipova Glavica near the town, while others were shot in the Pazarište area of Gospić. The killings were ordered by the Secretary of Lika Crisis Headquarters, Tihomir Orešković, and the commander of the 118th Infantry Brigade of the Croatian National Guard, Lieutenant Colonel Mirko Norac.

Operation Hurricane-91 was a military offensive undertaken by the Croatian Army against the Yugoslav People's Army and SAO Western Slavonia Territorial Defense Forces in the Sava River valley, in the region of Western Slavonia during the Croatian War of Independence. The operation began on 29 October 1991 and ended on 3 January 1992 when a nationwide ceasefire was signed to implement the Vance plan. The offensive was aimed at recapturing the region, in conjunction with two other HV offensives launched against SAO Western Slavonia in the north of the region within days.
The Independence of Croatia was a process started with the changes in the political system and the constitutional changes in 1990 that transformed the Socialist Republic of Croatia into the Republic of Croatia, which in turn proclaimed the Christmas Constitution, and held the 1991 Croatian independence referendum.

The Joševica massacre was a war crime committed by the paramilitary forces of the rebel Serbs in the Croatian village of Joševica during the Croatian War of Independence. The atrocities took place on December 16 of 1991.

The 1991 siege of Kijevo was one of the earliest conflicts in the Croatian War of Independence. The 9th Corps of the Yugoslav People's Army led by Colonel Ratko Mladić and the forces of the Serbian Autonomous Oblast (region) of Krajina under Knin police chief Milan Martić besieged the Croat-inhabited village of Kijevo in late April and early May 1991. The initial siege was lifted after negotiations that followed major protests in Split against the JNA.

The Kostrići massacre was the killing 16 Croat civilians in the village of Kostrići, near Hrvatska Kostajnica by Serb paramilitary unit "Kaline Komogovina" on 15 November 1991 during the Croatian War of Independence. Among those killed were two children. The oldest victim was 93 years old.

The Battle of Kusonje was a two-day clash fought in the village of Kusonje near the town of Pakrac on 8–9 September 1991, during the Croatian War of Independence. The battle was initiated when a platoon of the Croatian National Guard was ambushed by Croatian Serb forces while conducting a reconnaissance patrol. The ZNG deployed reinforcements to extract the ambushed platoon, but failed to reach them. The surviving members of the platoon held out until they ran out of ammunition and surrendered only to be killed by their captors and buried in a mass grave.

Operation Labrador was a false flag operation carried out by the Yugoslav Air Force's Counterintelligence Service (KOS) in the Croatian capital city of Zagreb during the early stages of the Croatian War of Independence. It was devised as a series of terrorist attacks intended to create an image of Croatia as a pro-fascist state. Two bombings were carried out on 19 August 1991, with one at the Jewish Community Centre and a second near Jewish graves at the Mirogoj Cemetery; there were no casualties. Additional attacks targeted the national railway network and were designed to implicate the Croatian President. Operation Labrador was complemented by Operation Opera — a propaganda campaign devised by the KOS to feed disinformation to the media.

The Battle of Logorište was fought east of Duga Resa and south of Karlovac, Croatia, from 4–6 November 1991 during the Croatian War of Independence, between the Croatian National Guard and the Yugoslav People's Army. The ZNG placed the JNA-held Logorište barracks under a blockade as part of the countrywide Battle of the Barracks, which aimed to pin down JNA units isolated in their bases and force them to surrender weapons and ammunition to the ZNG. However, the JNA garrison broke out from the besieged barracks with part of its stored equipment before the ZNG claimed the vacant base. The breakout was supported by JNA units and SAO Krajina units deployed to lift the blockade of the barracks and other JNA garrisons in Karlovac. A battle ensued as the ZNG attempted to contain advancing JNA units, ending with a ceasefire signed in The Hague.

The Lovas killings involved the killing of 70 Croat civilian residents of the village of Lovas between 10–18 October 1991, during the Croatian War of Independence. The killings took place during and in the immediate aftermath of the occupation of the village by the Yugoslav People's Army supported by Croatian Serb forces and Dušan Silni paramilitaries on 10 October, two days after Croatia declared independence from Yugoslavia. The occupation occurred during the Battle of Vukovar, as the JNA sought to consolidate its control over the area surrounding the city of Vukovar. The killings and abuse of the civilian population continued until 18 October, when troops guarding a group of civilians forced them to walk into a minefield at gunpoint and then opened fire upon them.

The Pakrac clash, known in Croatia as the Battle of Pakrac, was a bloodless skirmish that took place in the Croatian town of Pakrac in March 1991. The clash was a result of increasing ethnic tensions in Croatia during the breakup of Yugoslavia. It was one of the first serious outbreaks of violence in what became the Croatian War of Independence.

The Paulin Dvor massacre was an act of mass murder committed by soldiers of the Croatian Army (HV) in the village of Paulin Dvor, near the town of Osijek on 11 December 1991 during the Croatian War of Independence. Of the nineteen victims, eighteen were ethnic Serbs, and one was a Hungarian national. The ages of the victims, eight women and eleven men, ranged from 41 to 85. Two former Croatian soldiers were convicted for their role in the killings and were sentenced to 15 and 11 years, respectively. In November 2010, Croatian President Ivo Josipović laid a wreath at the graveyard of the massacre victims and officially apologized for the killings.

The Plitvice Lakes incident was an armed clash at the beginning of the Croatian War of Independence. It was fought between Croatian police and armed forces from the Croatian Serb-established SAO Krajina at the Plitvice Lakes in Croatia, on 31 March 1991. The fighting followed the SAO Krajina's takeover of the Plitvice Lakes National Park and resulted in Croatia recapturing the area. The clash resulted in one killed on each side and contributed to the worsening ethnic tensions.

The Saborsko massacre was the killing of 29 Croat residents of the village of Saborsko on 12 November 1991, following the seizure of the village in a Yugoslav People's Army and Croatian Serb offensive during the Croatian War of Independence. The fall of the town occurred as part of a JNA and Croatian Serb operation to capture a Croatian-held pocket centered on the town of Slunj, southeast of Karlovac. While the bulk of the civilian population fled with the surviving Croatian forces, those who remained in Saborsko were rounded up and either killed or expelled. The bodies of the victims were retrieved from two mass graves and several individual graves in 1995.

The Široka Kula massacre was the killing of 41 civilians in the village of Široka Kula near Gospić, Croatia during the Croatian War of Independence. The killings began on 13 October 1991 and continued until late October. They were perpetrated by the Croatian Serb SAO Krajina police and generally targeted ethnic Croat civilians in Široka Kula. Several victims were ethnic Serbs suspected by the police of collaboration with Croatian authorities. Most of the victims' bodies were thrown into the Golubnjača Pit, a nearby karst cave.

The Škabrnja massacre was the killing of 62 Croatian civilians and five prisoners of war by Serbian Autonomous Oblast Krajina Territorial Defence troops and the Yugoslav People's Army (JNA) in the villages of Škabrnja and Nadin northeast of Zadar on 18–19 November 1991, during the Croatian War of Independence. The massacre occurred shortly after an agreement to evacuate Zadar's JNA garrison following an increase in fighting between the Croatian National Guard and the JNA.

Martin Špegelj was a Croatian army general and politician who served as the second Defense Minister of Croatia and, later, the chief of staff of the newborn Croatian army and inspector-general of the army. His efforts to organize and equip the army from scratch were seen as instrumental in helping Croatia survive the first year of the Croatian War of Independence. Partly due to disagreements with president Franjo Tuđman, he retired in 1992, after the war froze with the permanent ceasefire at the end of 1991.

Operation Stinger was an offensive undertaken by the forces of the SAO Krajina, an unrecognized Croatian Serb region opposing the Republic of Croatia, against positions held by the Croatian police in the region of Banovina on 26–27 July 1991, during the Croatian War of Independence. It was primarily aimed at police stations in Glina and Kozibrod, as well as police-held positions in a string of villages between the town of Dvor and Kozibrod. In addition to Glina and Kozibrod, heavy fighting took place in the village of Struga, north of Dvor, where Croatian Serb forces employed a human shield consisting of Croat civilians taken from their homes in Struga and the nearby village of Zamlača.

Operation Swath-10 was a military offensive undertaken by the Croatian Army against the SAO Western Slavonia Territorial Defense Forces on Bilogora Mountain in western Slavonia. Occurring from 31 October to 4 November 1991, during the Croatian War of Independence, the operation was a Croatian victory and its success set the stage for follow-up advances by Croatian forces on Papuk 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 of Croatia.

The Vance plan was a peace plan negotiated by the former United States Secretary of State Cyrus Vance in November 1991 during the Croatian War of Independence. At that time, Vance was the Special Envoy of the Secretary-General of the United Nations; he was assisted by United States diplomat Herbert Okun during the negotiations. The plan was designed to implement a ceasefire, demilitarize parts of Croatia that were under the control of Croatian Serbs and the Yugoslav People's Army (JNA), allow the return of refugees, and create favourable conditions for negotiations on a permanent political settlement of the conflict resulting from the breakup of Yugoslavia.

The Siege of Varaždin Barracks, also referred to locally as Varaždin's Days of War, was the blockade and capture of the Yugoslav People's Army (JNA) barracks and other facilities in and around the city of Varaždin during the Croatian War of Independence. The blockade began on 14 September 1991, quickly escalated into fighting, and ended on 22 September with the surrender of the JNA garrison. It was part of the Battle of the Barracks—an effort by Croatian armed forces to isolate JNA units based at barracks in Croatia, or capture the barracks to provide arms for Croatia's nascent army.

The Voćin massacre was the killing of 43 civilians in Voćin, Croatia, by the Serbian White Eagles paramilitary unit on 13 December 1991, during the Croatian War of Independence. The massacre was carried out after the unit was ordered to abandon the village before the Croatian Army recaptured the area in Operation Papuk-91. All the victims were local Croats, save one Serb, who had tried to protect his neighbours. Gunfire was the leading cause of death, though some of the victims were killed with axes or chainsaws, or were burned to death. The victims exhibited signs of torture and were left unburied. On the night of 13–14 December, the White Eagles dynamited a 550-year-old church in the village.

The Vukovar massacre, also known as the Vukovar hospital massacre or the Ovčara massacre, was the killing of Croatian prisoners of war and civilians by Serb paramilitaries, to whom they had been turned over by the Yugoslav People's Army (JNA), at the Ovčara farm southeast of Vukovar on 20 November 1991, during the Croatian War of Independence. The massacre occurred shortly after Vukovar's capture by the JNA, Territorial Defence (TO), and paramilitaries from neighbouring Serbia. It was the largest massacre of the Croatian War of Independence.

The Battle of Vukovar was an 87-day siege of Vukovar in eastern Croatia by the Yugoslav People's Army (JNA), supported by various paramilitary forces from Serbia, between August and November 1991. Before the Croatian War of Independence the Baroque town was a prosperous, mixed community of Croats, Serbs and other ethnic groups. As Yugoslavia began to break up, Serbia's President Slobodan Milošević and Croatia's President Franjo Tuđman began pursuing nationalist politics. In 1990, an armed insurrection was started by Croatian Serb militias, supported by the Serbian government and paramilitary groups, who seized control of Serb-populated areas of Croatia. The JNA began to intervene in favour of the rebellion, and conflict broke out in the eastern Croatian region of Slavonia in May 1991. In August, the JNA launched a full-scale attack against Croatian-held territory in eastern Slavonia, including Vukovar.

Operation Whirlwind was a failed Croatian Army (HV) offensive in the Banovina region of Croatia, fought from 11–13 December 1991, during the early stages of the Croatian War of Independence. The offensive employed a single infantry brigade as the main attacking force, supported by a bridging unit and a handful of tanks and armoured personnel carriers. Although the offensive met hardly any resistance in its initial stage, achieving tactical surprise, the operation was poorly planned, supported and executed as a result of limited training and combat experience. The offensive established a short-lived bridgehead, evacuated in panic two days after the operation commenced, under tank and mortar fire from the Yugoslav People's Army (JNA) deployed north of Glina.

The 1991 Yugoslav campaign in Croatia was a series of engagements between the Yugoslav People's Army (JNA), the Yugoslav Navy and the Yugoslav Air Force, and the Croatian National Guard (ZNG) then the Croatian Army (HV) during the Croatian War of Independence. The JNA was originally deployed in order to preserve Yugoslavia, and the initial plan of the campaign entailed the military occupation of Croatia and the removal of the Croatian leadership elected in 1990. The JNA intervention was the culmination of its involvement in the confiscation of weapons from Croatia's Territorial Defence, and in the Croatian Serb revolt that had begun in August 1990. From that time, the JNA had been frequently deployed to form a buffer zone between the insurgents and the ZNG or the Croatian police. In effect, these JNA buffer zones often secured the territorial gains of the insurgents and led to an increasingly hostile relationship between the JNA and Croatia. The JNA campaign plan was amended shortly before the campaign to include the relief of JNA barracks besieged by the ZNG. The besieging and subsequent capture of several JNA facilities allowed Croatia to arm its previously poorly equipped military and to equip new recruits.

The 1991 riot in Zadar was an act of violence that took place in the Croatian city of Zadar on 2 May 1991. Following an incident in the Zadar hinterland in which a Croatian policeman was killed, reportedly by SAO Krajina militiamen, Croatian civilians vandalized, destroyed and looted properties belonging to ethnic Serbs and Yugoslav companies in the city.

The Battle of Zadar was a military engagement between the Yugoslav People's Army, supported by the Croatian Serb Serbian Autonomous Oblast of Krajina, and the Croatian National Guard, supported by the Croatian Police. The battle was fought north and east of the city of Zadar, Croatia, in the second half of September and early October 1991 during the Croatian War of Independence. Although the JNA's initial orders were to lift the Croatian siege of the JNA's barracks in the city and isolate the region of Dalmatia from the rest of Croatia, the orders were amended during the battle to include capturing the Port of Zadar in the city centre. The JNA's advance was supported by the Yugoslav Air Force and Navy.