In late autumn 1941, Montenegrin communists attempted to negotiate with Pačariz but failed to convince him and his subordinate officers to join the Partisans.

Pačariz mobilized Muslims living in Prijepolje, on the right bank of the Lim River, as well as in the former municipalities of Velika Župa and Seljašnica.

[9] In mid-November 1941, a Chetnik unit of 40 men went to Kosatica and attempted to disarm the Muslim militia commanded by Sulejman Pačariz.

In retaliation for the deaths of his two men, Pačariz's Muslim militia attacked a part of Kosatica inhabited by Serbs.

The following day, Pačariz organized a raid in Velika Župa with the Italians, during which he stole cattle and redistributed it to the villages of Hisardžik and Sjenica.

[18] In August 1942, alongside Italian forces and the legalized Chetniks of Vuk Kalaitović, Pačariz participated in an anti-Partisan operation in the Mileševa srez targeting a local Partisan cell.

[19] Together with other commanders of the Muslim militia, including Husein Rovčanin, Pačariz attended a conference in the village of Godijeva.

In October 1943, he arrived in the Sandžak region and took command of the local militia, which consisted of around 5,000 men headquartered in Sjenica.

As the senior Waffen SS officer, Karl von Krempler appointed Pačariz as the formal commander of the unit.

However, Krempler, serving as the key military trainer and the primary contact for German arms and munitions, retained effective control.

[24] In early 1944, he was appointed commander of all militia units in the Mileševo srez, including those under Husein Rovčanin.

[27] In November 1944, after suffering heavy losses to the Partisans, Pačariz and his units retreated to Sarajevo, where the SS Polizei-Selbstschutz-Regiment Sandschak was placed under the command of Ustaše General Maks Luburić.