The Army of Republika Srpska, commonly referred to in English as the Bosnian Serb Army, was the military of Republika Srpska, the self-proclaimed Serb secessionist republic, a territory within the newly independent Bosnia and Herzegovina, which it defied and fought against. Active during the Bosnian War from 1992 to 1995, it continued to exist as the armed forces of RS, one of two entities making up Bosnia and Herzegovina, until 2006 when it was integrated into the Armed Forces of Bosnia and Herzegovina. Forces of the VRS engaged in several campaigns, including Operation Corridor 92, Operation Vrbas '92, Operation Bura, and Operation Spider; they were also involved in the siege of Sarajevo, as well as the Srebrenica massacre.
The Army of the Republic of Bosnia and Herzegovina, often referred to as Bosnian Army, was the military force of the Republic of Bosnia and Herzegovina. It was established by the government of the Republic of Bosnia and Herzegovina in 1992 following the outbreak of the Bosnian War.
The 7th Muslim brigade was an elite all-volunteer brigade of the 3rd Corps of the Army of the Republic of Bosnia and Herzegovina. It served as the ARBiH's primary assault brigade in Central Bosnia, and was headquartered in Zenica. The brigade's manpower largely came from the cities of Zenica, Travnik, and Kakanj; however, there were soldiers from all over Bosnia who served in its ranks. During the war, the brigade liberated over 1,100 km2 of territory, including multiple cities, as well as numerous villages and mountains. Some of the most notable combat actions of the 7th Muslim brigade include the liberation of Vareš, Fojnica, Bugojno, Kakanj, and Travnik from the hands of HVO forces, as well as the defence of Mt. Igman and the liberation of liberation of Mt. Vlašić (Opaljenik), Teslić-Šerić (Jezera), Nabožić (Ilijaš), and Vozuća and the Ozren pocket from VRS forces.
Operation Sana was the final military offensive of the Army of the Republic of Bosnia and Herzegovina in western Bosnia and Herzegovina and the last major battle of the Bosnian War. It was launched from the area of Bihać on 13 September 1995, against the Army of Republika Srpska, and involved advances towards Bosanski Petrovac, Sanski Most and Bosanska Krupa. At the same time, the Croatian Army and the Croatian Defence Council were engaging the VRS in Operation Maestral 2 further to the southeast. After an initial 70-kilometre (43 mi) advance, VRS reinforcements managed to stop the ARBiH short of Sanski Most and Novi Grad, and reversed some of the ARBiH's territorial gains in a counterattack. After a part of the ARBiH 5th Corps was threatened with defeat around the town of Ključ, the ARBiH requested assistance from the HV.
Operation Mistral 2, officially codenamed Operation Maestral 2, was a Croatian Army (HV) and Croatian Defence Council (HVO) offensive in western Bosnia and Herzegovina on 8–15 September 1995 as part of the Bosnian War. Its objective was to create a security buffer between Croatia and positions held by the Bosnian Serb Army of Republika Srpska (VRS). The operation also spearheaded a Herzeg-Croat led move to compromise the occupation of the largest Bosnian Serb-held city, Banja Luka, by capturing the towns of Jajce, Šipovo and Drvar. Thus jeopardizing the operations capacity of Banja Luka and ultimately leading to its recapture. The combined HV and HVO forces were under the overall command of HV Major General Ante Gotovina.
Operation Corridor 92 was the largest operation conducted during the Bosnian War by the Army of Republika Srpska (VRS) against the forces of the Croatian Defence Council (HVO) and the Croatian Army (HV) in the Bosanska Posavina region of northern Bosnia and Herzegovina between 24 June and 6 October 1992. The objective of the offensive was to re-establish a road link between the city of Banja Luka in the west of the country and the eastern parts of the territory controlled by the Bosnian Serbs. The offensive was prompted by the capture of Derventa by the HV and the HVO – a move that blocked the single overland road between the VRS-controlled territories.
Operation Vrbas '92 was a military offensive undertaken by the Army of Republika Srpska in June–October 1992, during the Bosnian War. The goal of the operation was the destruction of a salient around the central Bosnian town of Jajce, which was held by the Croatian Defence Council and the Army of the Republic of Bosnia and Herzegovina. The intensity of fighting varied considerably and involved several major VRS offensive efforts interspersed by relative lulls in fighting. Jajce fell to the VRS on 29 October 1992, and the town's capture was followed by the destruction of all its mosques and Roman Catholic churches.
Operation Spider were a series of military actions in northwestern Bosnia that began on November 1994 and continued until December 1994. It was a combined effort of Republika Srpska and the Republic of Serb Krajina to recover the territory of the Autonomous Province of Western Bosnia (APZB), which was a key ally of the Serbs. Franko Simatović and Jovica Stanišić commanded the offensive. The Bosnian central government had previously overrun and seized the territory. The offensive ended in a Serb victory and the Autonomous Province of Western Bosnia remained in existence until the fall of its key ally, the Republic of Serbian Krajina, and the subsequent end of the war.
The Split Agreement or Split Declaration was a mutual defence agreement between Croatia, the Republic of Bosnia and Herzegovina and the Federation of Bosnia and Herzegovina, signed in Split, Croatia on 22 July 1995. It called on the Croatian Army (HV) to intervene militarily in Bosnia and Herzegovina, primarily in relieving the siege of Bihać.
The Battle of Kupres was a battle of the Bosnian War, fought between the Army of the Republic of Bosnia and Herzegovina (ARBiH) and the Croatian Defence Council (HVO) on one side and the Army of Republika Srpska (VRS) on the other from 20 October to 3 November 1994. It marks the first tangible evidence of the Bosniak–Croat alliance set out in the Washington Agreement of March 1994, brokered by the United States to end the Croat–Bosniak War fought between the ARBiH and the HVO in Bosnia and Herzegovina. The ARBiH and the HVO were not coordinated at first, rather they launched separate operations aimed at capture of Kupres.
Operation Una was a military offensive conducted by the Croatian Army against the Army of Republika Srpska in western Bosnia and Herzegovina on 18–19 September 1995, during the Bosnian War. The operation entailed a crossing of the Una and Sava rivers to establish bridgeheads at Novi Grad, Bosanska Dubica, Bosanska Kostajnica and opposite Jasenovac to allow for a subsequent advance towards Prijedor and Banja Luka.
The Battle of Orašje was fought during the Bosnian War, from 5 May to 10 June 1995, between the Bosnian Serb Army of Republika Srpska and the Bosnian Croat Croatian Defence Council for control of the town of Orašje and its surrounding area on the south bank of the Sava River. The offensive codenamed Operation Flame-95 and referred to by Croatian sources as Operation Revenge was actually fought with varying intensity, with periods of combat interspersed by lulls lasting two to seven days. The heaviest fighting was reported on 15 May, when the VRS managed to break through a portion of the HVO defences near the village of Vidovice, but the breach was successfully contained and the lost ground was recovered by the HVO.
Operation Southern Move was the final Croatian Army (HV) and Croatian Defence Council (HVO) offensive of the Bosnian War. It took place in western Bosnia and Herzegovina on 8–11 October 1995. Its goal was to help the Army of the Republic of Bosnia and Herzegovina (ARBiH) whose positions around the town of Ključ, captured by them during Operation Sana, were endangered by a counteroffensive by the Army of Republika Srpska (VRS). The objectives of Operation Southern Move included the capture of the town of Mrkonjić Grad and positions on the Manjača Mountain which would allow the HV and the HVO to directly threaten Banja Luka, the largest city controlled by Bosnian Serbs. Finally, the offensive was also aimed at capturing the Bočac Hydroelectric Power Station, the last significant source of electricity under VRS control in western Bosnia and Herzegovina. The combined HV and HVO forces were under the overall command of HV Major General Ante Gotovina.
Operation Vlašić was a military offensive undertaken by the Army of the Republic of Bosnia and Herzegovina (ARBiH) during the Bosnian War, during which it captured Mount Vlašić in central Bosnia, which had been under the control of the Army of Republika Srpska (VRS) until then. The battle took place from March 20 to 24, 1995. The commander of the forces of the Army of BiH was General Mehmed Alagić. 100 square kilometres (39 sq mi) of territory was liberated in this action, among which was a relay.
Operation Bura was a joint offensive conducted by the Croatian Defence Council and the Croatian Army on the territories held by the Nevesinje and Bileća brigades of the Army of Republika Srpska during the Bosnian War.
The 5th Krajina Division was a Yugoslav Partisan division formed in Glamočko polje on 9 November 1942.
Operation "Breza 94" was the official codename for the military offensive conducted by the 1st Krajina Corps of the VRS in September 1994 in Bosanska Krajina. The objective of the offensive was the breaking of the 5th Corps and the conquest of Bosanska Krajina. The offensive ended in VRS defeat with the ARBiH capturing 20 square kilometers previously held by Serbs.
Operation Shield 94 refers to the offensive in Western Bosnia from the 4 November to 20 November 1994, the key goal was to fully destroy the 5th Corps, and to recapture lands lost during Operation Grmeć 94. it resulted in Decisive Serbian victory.
The Mala Kladuša offensive were series of fighting between NOZB and ARBiH to re capture villages south of Velika Kladuša. These offensives were after successful Operation Spider in which Autonomous Province of Western Bosnia was re-established, and resulted into successful operation by NOZB and VRS, they had re-captured Velika Kladuša,and as time passed re-established Autonomous Province of Western Bosnia, soon said to become an Republic. In this offencive NOZB took back Mala Kladuša, Podzvizd, Marjanovac, Kumarica, Grahovo and some other villages and several other villages. And later the NOZB also took Vrnograč.
Operation Bosanska Krajina was the code name of the Army of Republika Srpska in capturing the entire municipalities of Prijedor, Sanski Most and Ključ. This was also the response of the VRS to the ARBiH attack on the city of Prijedor. The operation ended with the victory of the VRS and the beginning of the siege of Bihać.
Republika Srpska 
Republic of Bosnia and Herzegovina 
Atif Dudaković