The Bihać operation was a military operation conducted by Yugoslav partisans against the Independent State of Croatia (NDH) and Nazi Germany during World War II. The aim of the operation was to capture Bihać and the surrounding towns to connect Partisan held areas in Bosanska Krajina, and Knisnka Krajina. The battle for the city of Bihać lasted from 2 November to 4 November 1942. After capturing the city, the partisans continued to fight in surrounding areas until 15 November. The operation resulted in a major Partisan victory, with Bihać and the surrounding areas being captured, and the NDH suffering significant casualties.