It was the largest, most experienced, and the most capable corps in the army.

Because of this fact it was successor of the infrastructure, organization and most of the equipment.

The main task of the corps was to defend western parts of the Republika Srpska, today however these areas are mostly part of Banja Luka region.

During the War in Bosnia and Herzegovina 6,450 died,[4] 27,176 wounded and 1,031 soldiers have been missing.

Responsibility zone of the 1st Krajina Corps was determined by rivers Sava, Una, Ukrina, Ugar and mountains Majdanska and Vlašić.