The 13th Waffen Mountain Division of the SS Handschar was a mountain infantry division of the Waffen-SS, an armed branch of the German Nazi Party that served alongside but was never formally part of the Wehrmacht during World War II. At the post-war Nuremberg trials, the Waffen-SS was declared to be a criminal organisation due to its major involvement in war crimes and crimes against humanity. From March to December 1944, the division fought a counter-insurgency campaign against communist-led Yugoslav Partisan resistance forces in the Independent State of Croatia, a fascist puppet state of Germany that encompassed almost all of modern-day Croatia, all of modern-day Bosnia and Herzegovina, and parts of Serbia.
The Croatian Home Guard was the land army part of the armed forces of the Independent State of Croatia which existed during World War II.
Operation Southeast Croatia was a large-scale German-led counter-insurgency operation conducted in the southeastern parts of the Independent State of Croatia during World War II. It was the first of two German-led operations targeting mainly Yugoslav Partisans in eastern Bosnia between 15 January and 4 February 1942. Several days after the conclusion of Operation Southeast Croatia, a follow-up operation known as Operation Ozren was carried out between the Bosna and Spreča rivers. Both operations also involved Croatian Home Guard and Italian troops and are associated with what is known as the Second Enemy Offensive in post-war Yugoslav historiography. The Second Enemy Offensive forms part of the Seven Enemy Offensives framework in Yugoslav historiography.
Operation Trio was the first large-scale joint German-Italian counter-insurgency operation of World War II conducted in the Independent State of Croatia (NDH), which included modern-day Bosnia and Herzegovina. It was carried out in two phases within eastern Bosnia from 20 April to 13 May 1942, with Ustaše militia and Croatian Home Guard forces taking part on the Axis side. The aim of the operation was to target all insurgents between Sarajevo and the Drina river in eastern Bosnia. These included the communist-led Yugoslav Partisans and Serb nationalist Chetniks. Differentiating between the rank and file of the two insurgent factions was difficult, as even the communist-led insurgent groups consisted mainly of Serb peasants who had little understanding of the political aims of their leaders.
The Territory of the Military Commander in Serbia was the area of the Kingdom of Yugoslavia that was placed under a military government of occupation by the Wehrmacht following the invasion, occupation and dismantling of Yugoslavia in April 1941. The territory included only most of modern central Serbia, with the addition of the northern part of Kosovo, and the Banat. This territory was the only area of partitioned Yugoslavia in which the German occupants established a military government. This was due to the key rail and the Danube transport routes that passed through it, and its valuable resources, particularly non-ferrous metals. On 22 April 1941, the territory was placed under the supreme authority of the German military commander in Serbia, with the day-to-day administration of the territory under the control of the chief of the military administration staff. The lines of command and control in the occupied territory were never unified, and were made more complex by the appointment of direct representatives of senior Nazi figures such as Reichsführer-SS Heinrich Himmler, Reichsmarschall Hermann Göring, and Reichsminister Joachim von Ribbentrop. The Germans used Bulgarian troops to assist in the occupation, but they were at all times under German control. Sources variously describe the territory as a puppet state, a protectorate, a "special administrative province", or describe it as having a puppet government. The military commander in Serbia had very limited German garrison troops and police detachments to maintain order, but could request assistance from a corps of three divisions of poorly-equipped occupation troops.
World War II in the Kingdom of Yugoslavia began on 6 April 1941, when the country was invaded and swiftly conquered by Axis forces and partitioned among Germany, Italy, Hungary, Bulgaria and their client regimes. Shortly after Germany attacked the USSR on 22 June 1941, the communist-led republican Yugoslav Partisans, on orders from Moscow, launched a guerrilla liberation war fighting against the Axis forces and their locally established puppet regimes, including the Axis-allied Independent State of Croatia (NDH) and the Government of National Salvation in the German-occupied territory of Serbia. This was dubbed the National Liberation War and Socialist Revolution in post-war Yugoslav communist historiography. Simultaneously, a multi-side civil war was waged between the Yugoslav communist Partisans, the Serbian royalist Chetniks, the Axis-allied Croatian Ustaše and Home Guard, Serbian Volunteer Corps and State Guard, Slovene Home Guard, as well as Nazi-allied Russian Protective Corps troops.
The Kozara Offensive, also known as Operation West Bosnia was a large-scale German-led counter-insurgency operation against the Yugoslav Partisans in the Bosnian mountain region of Kozara in the Independent State of Croatia during World War II. It was launched on 10 June 1942, with the goal to encircle and destroy the Partisans who were operating in the Kozara mountain region near Banja Luka, which threatened German access to the Belgrade-Zagreb railway.
Operation Alfa was an offensive carried out in early October 1942 by the military forces of Italy and the Axis puppet state, the Independent State of Croatia (NDH), supported by Chetnik forces under the control of vojvoda Ilija Trifunović-Birčanin. The offensive was directed against the communist-led Partisans in the Prozor region, then a part of the NDH. The operation was militarily inconclusive, and in the aftermath, Chetnik forces conducted mass killings of civilians in the area.
Mladen Stojanović was a Bosnian Serb and Yugoslav physician who led a detachment of Partisans on and around Mount Kozara in northwestern Bosnia during World War II in Yugoslavia. He was posthumously bestowed the Order of the People's Hero.
The 392nd (Croatian) Infantry Division was a so-called "legionnaire" division of the German Army during World War II. It was formed in August 1943 using Croatian Home Guard soldiers with a German cadre. The division was commanded by Germans down to battalion and even company level in nearly all cases. Originally formed with the intention of service on the Eastern Front, this did not eventuate, and the division was used in anti-Partisan operations in the territory of the Independent State of Croatia (NDH) until the end of the war. It was commonly known as the Blue Division.
The Bihać Republic was a short-lived republic that existed between November 1942 and January 1943 in a liberated area of Nazi-occupied Yugoslavia. It was established by the Partisan resistance movement following the liberation of Bihać. Bihać became its administrative center and the first session of the Anti-Fascist Council of the People's Liberation of Yugoslavia (AVNOJ) was held there on 26 November 1942.
The 369th (Croatian) Infantry Division was a legionary division of the German Army (Wehrmacht) during World War II.
The 373rd (Croatian) Infantry Division was a division of the German Army during World War II. It was formed in June 1943 using a brigade from the Home Guard of the Independent State of Croatia with the addition of a German cadre. The division was commanded by Germans down to battalion and even company level in nearly all cases, and was commonly referred to as a "legionnaire division". Originally formed with the intention of service on the Eastern Front, it was used instead for anti-Partisan operations in the territory of the NDH until the end of the war. It fought mainly in the western areas of the NDH, and was involved in the attempt to kill or capture the leader of the Partisans, Josip Broz Tito, in May 1944. Severely depleted by desertion, the division withdrew towards the Reich border in the early months of 1945, eventually surrendering to the Partisans on 10 May 1945 near Brežice in modern-day Slovenia.
The Ustaše Militia was the military branch of the Ustaše, established by the fascist and genocidal regime of Ante Pavelić in the Independent State of Croatia (NDH), an Axis puppet state established from a large part of occupied Yugoslavia during World War II.
The Srb uprising was a rebellion against the Independent State of Croatia that began on 27 July 1941 in Srb, a village in the region of Lika. The uprising was started by the local population as a response to persecutions of Serbs by the Ustaše and was led by Chetniks and Yugoslav Partisans. It soon spread across Lika and Bosanska Krajina. During the uprising numerous war crimes were committed against local Croat and Muslim population, especially in the area of Kulen Vakuf. As NDH forces lacked the strength to suppress the uprising, the Italian Army, which was not a target of the rebels, expanded its zone of influence to Lika and parts of Bosanska Krajina.
The Hadžiefendić Legion or Muslim Legion was a Bosniak self-defence militia and Croatian Home Guard unit based in the predominantly Muslim Tuzla region of the Independent State of Croatia (NDH) during World War II. The brigade–sized force was formally a "Volunteer Home Guard Regiment", and was raised in late December 1941 under the command of the former Royal Yugoslav Army reservist Major Muhamed Hadžiefendić, who had been commissioned into the Croatian Home Guard. By the end of the year, the Legion had commenced forming battalions in six towns in northeastern Bosnia.
Uroš Drenović was a Bosnian Serb military commander in the central Bosnia region of the fascist puppet state known as the Independent State of Croatia (NDH), led by the Ustaše, during World War II. After distinguishing himself in resisting the Ustaše alongside communist-led rebels, Drenović betrayed the communist-led Partisans and began to collaborate with the Ustaše, Italians and Germans against them.
Husein "Huska" Miljković was a Bosnian Muslim military commander who fought with various military formations in Yugoslavia during World War II. A communist politician during the interwar period, he joined the Yugoslav Partisans following the Axis invasion of Yugoslavia but defected to the Ustaše in mid-1941. He defected back to the Partisans in December 1941 and was made leader of communist forces in northwestern Bosnia during 1942. Following a political disagreement, he defected to the Ustaše yet again in February 1943 and was given command of 100 soldiers. He formed his own 3,000-strong Bosnian Muslim militia with the help of the Germans and Croats in late 1943. He agreed to align himself with the Partisans once again in early 1944, prompting Bosnian Muslim anti-communists within his militia to assassinate him in May 1944.
The Partisan Long March was the redeployment of Josip Broz Tito's Partisan Supreme Headquarters and the major fighting elements of the Yugoslav Partisans across the Independent State of Croatia, from south-eastern to north-western Bosnia that commenced in late June 1942. The march followed the first large-scale joint German-Italian counter-insurgency operation in the NDH, Operation Trio, and the combined Italian-Montenegrin Chetnik offensive in Montenegro and eastern Herzegovina.
The attack on Kruševac was an attack of Yugoslav rebels on Axis-held Kruševac in the German-occupied territory of Serbia which lasted between 23 and 27 September 1941 during World War II.
Germany 
Independent State of Croatia 
Partisans