The Chavdar Partisan Brigade was a subdivision of the First Sofia Insurgent Operational Zone of NOVA during the Bulgarian resistance movement during World War II (1941-1944).

Until the end of 1943, actions were mainly carried out in the villages of Bunovo, Smolsko, Radoslavovo (now Chavdar), and the post at the Galabets pass.

[3] The actions of the brigade were also in the field of view of the German intelligence in Bulgaria, which marked their scale in the cases of the village of Kremikovtsi and the town of Koprivshtitsa.

In May and June 1944, the two companies came under blockade, organized by the military, gendarmerie and police units from the cities of Vratsa, Pleven and Sofia.

On September 9, 1944, the Chavdar Brigade participated in the establishment of the power of the Fatherland Front in the Ihtiman, Botevgrad, Pirdop and Sofia regions.