The Kosovo War was an armed conflict in Kosovo that lasted from 28 February 1998 until 11 June 1999. It was fought between the forces of the Federal Republic of Yugoslavia, which controlled Kosovo before the war, and the Kosovo Albanian separatist militia known as the Kosovo Liberation Army (KLA). The conflict ended when the North Atlantic Treaty Organization (NATO) intervened by beginning air strikes in March 1999 which resulted in Yugoslav forces withdrawing from Kosovo.
The Liberation Army of Preševo, Medveđa and Bujanovac was an Albanian militant insurgent group fighting for separation from the Federal Republic of Yugoslavia for three municipalities: Preševo, Medveđa, and Bujanovac, home to most of the Albanians in south Serbia, adjacent to Kosovo. Of the three municipalities, two have an ethnic Albanian majority, whilst Medveđa has a significant minority of them.
The Račak massacre or Račak operation was the massacre of 45 Kosovo Albanians that took place in the village of Račak in central Kosovo in January 1999. The massacre was perpetrated by Serbian security forces in response to Albanian separatist activity in the region. The Serbian government refused to let a war crimes prosecutor visit the site, and maintained that the casualties were all members of the rebel Kosovo Liberation Army (KLA) killed in combat with state security forces.
Unit for Special Operations or Special Operations Unit, also known as Red Berets or Frankies, was an elite special forces police unit of Serbian State Security Directorate (RDB).
Adem Jashari was one of the founders of the Kosovo Liberation Army (KLA), a Kosovo Albanian separatist militia which fought for the secession of Kosovo from the Federal Republic of Yugoslavia during the 1990s.
Drenica, also known as the Drenica Valley, is a hilly region in central Kosovo, covering roughly around 700 square kilometres (270 sq mi) of Kosovo's total area (6%). It consists of two municipalities, Drenas and Skenderaj, and several villages in Klina, Zubin Potok, Mitrovica and Vushtrri. It is located west of the capital, Pristina.
The Insurgency in the Preševo Valley was an approximately two year-long armed conflict between 1999 and 2001, between the Federal Republic of Yugoslavia and the ethnic Albanian separatists of the Liberation Army of Preševo, Medveđa and Bujanovac (UÇPMB). There were instances during the conflict in which the Yugoslav government requested KFOR support in suppressing UÇPMB attacks since they could only use lightly armed military forces as part of the Kumanovo Treaty that ended the Kosovo War, which created a buffer zone between FR Yugoslavia and Kosovo.
The Battle of Košare was fought during the Kosovo War between the FR Yugoslav Forces and the Kosovo Liberation Army (KLA), the latter supported by the NATO air forces and Albanian Army. The battle was fought around Košare on the border between FR Yugoslavia and Albania from 9 April 1999 until 10 June 1999 during the NATO bombing of FR Yugoslavia.
The Battle of Junik was fought during the Kosovo War between the ethnic Albanian paramilitary organization known as the Kosovo Liberation Army (KLA) and the security forces of the Federal Republic of Yugoslavia over the town of Junik in western Kosovo.
The Battle of Glođane was fought during the Kosovo War in the village of Glođane first on March 24, 1998, and again later on August 11, 1998. It involved the Kosovo Albanian militant group known as the Kosovo Liberation Army (KLA) and the Yugoslav military and Serbian police forces. The clashes signified a sequence of military offensives initiated by the Yugoslav army and Serbian police to counter the increasing presence of the Kosovo Liberation Army (KLA) within Kosovo Albanian villages.
The Drenica massacres were a series of killings of Kosovo Albanian civilians committed by Serbian special police forces[a] in the Drenica region of central Kosovo.
An incident took place on the Albania–Yugoslav border in April 1999 when the Yugoslav Army shelled several Albanian border towns around Krumë, Tropojë. In these villages, refugees were being housed after fleeing the ongoing war in Kosovo by crossing into Albania. On 13 April 1999, Yugoslav infantry entered Albanian territory to close off an area that was used by the Kosovo Liberation Army to stage attacks against Yugoslav targets.
The Lake Radonjić massacre or the Massacre at Lake Radonjić refers to the mass murder of at least 34 Kosovo Serb, Kosovo Albanian and Roma civilians near Lake Radonjić, by the village of Glodjane, in Kosovo, Federal Republic of Yugoslavia on 9 September 1998. The massacre took place during the Kosovo War.
The 1991 siege of Kijevo was one of the earliest clashes of the Croatian War of Independence. The 9th Corps of the Yugoslav People's Army (JNA) 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.
On December 14, 1998, the Yugoslav Army (VJ) ambushed a group of 140 Kosovo Liberation Army (KLA) militants attempting to smuggle weapons and supplies from their base in Albania into the Federal Republic of Yugoslavia. A five-hour battle ensued, ending with the deaths of 36 militants and the capture of a further nine. Dozens more fled back to Albania, abandoning large quantities of weapons and supplies, which the Yugoslav authorities subsequently seized. The ambush was the most serious war-related incident in Kosovo since a U.S.-negotiated truce took effect two months before. It came on the heels of increasing tensions in the province, where inter-ethnic violence had been escalating steadily since early 1995.
On the morning of April 23, 1998, a band of Kosovo Liberation Army (KLA) fighters was ambushed by a much smaller group of Yugoslav Army (VJ) border guards near the Košare outpost, just west of Dečani. The fighters had been trying to smuggle weapons and supplies into Kosovo via northern Albania. Nineteen were killed in the ensuing attack, and a further two were captured. The VJ did not sustain any casualties. Some of the militants retreated back to Albania, while others managed to break through the ambush and make it past the Yugoslav border, into Kosovo. Following the clash, the VJ confiscated a large quantity of arms that the militants had been transporting.
On July 18, 1998 a Yugoslav Army (VJ) border patrol ambushed a column of Kosovo Liberation Army (KLA) insurgents and foreign mujahideen just west of Dečani, on the frontier between Albania and Yugoslavia. The ambush resulted in the deaths of four KLA fighters and 18 mujahideen, most of whom were citizens of Saudi Arabia. Twelve militants were wounded, and a further six were arrested by the Yugoslav authorities and charged with illegal entry and gunrunning. The VJ reported seizing a significant amount of arms and ammunition that the militants had been smuggling. One Yugoslav border guard was seriously wounded in the clash.
Timeline of the Kosovo War. Abbreviations:
The attack on Orahovac was a 3-day long clash Between 17 and 20 July 1998 and was fought between the forces of the Kosovo Liberation Army (KLA) and the FR Yugoslavia. The KLA surrounded Serb villages intending to assert authority for the Kosovo Albanian provisional government through taking over a town and creating a corridor between KLA hotbed in Drenica and the Albanian border region. 8 KLA fighters and two Yugoslav police officers were killed, as well as five Serb civilians during the attack, while 85 Serb civilians were abducted by the KLA, 40 of whom are presumed to have been murdered. During the takeover of the town by Serbian special police, 79 Albanians civilians were executed.
The Dečan operation was an operation when Serbian Special Police Units and the Special Operations Unit were against the Kosovo Liberation Army (KLA) in early June 1998. The plan of the operation was to eliminate the Albanian militants to gain wider space for the Dečan municipality in the southwestern part of Kosovo, which had been held by the KLA between April and May 1998. The KLA attacked the police and civilians affecting the local population. Due to the complete blockade of this area and the impossibility of the normal functioning of daily life activities, the security forces of the Federal Republic of Yugoslavia carried out an unblocking operation during which the KLA units were overwhelmed and forced to retreat.
FR Yugoslavia 
Kosovo Liberation Army 
Milorad Ulemek 