Druzhinin's staff destroyed documents and broke through the ring in the forest surrounding the Chernihiv and Sumy oblasts to connect to the Red Army.
In early 1943, Ukrainian Partisan Movement Headquarters ordered a raid in Shchors district of Chernihiv oblast, with heavy fighting against the Nazis.
On 11 March 1943, the Chernihiv-Volyn partisan formations moving into the right bank of the Ubort River, where it remained until departing by train from Kovel in May.
In July the partisans implemented an order from the Supreme Command of the Red Army, sabotaging railways and seizing manpower and equipment.
After reforming the partisan formation in May 1944, Druzhinin was elected second secretary of the Ternopil oblast committee of the Communist Party (Bolshevik) of Ukraine.
He spent the last years of his career as director of the Institute of Professional Training of Food Industry Experts of the USSR.