In August 1942, Bergmann went to the Eastern Front, where it saw its first action in the North Caucasus campaign in August 1942. The unit engaged in anti-partisan actions in the Mozdok-Nalchik-Mineralnye Vody area and conducted reconnaissance and subversion in the Grozny area. At the end of 1942, Bergmann conducted a successful sortie through the Soviet lines, bringing with them some 300 Red Army defectors, and covered the German retreat from the Caucasus. Bergmann went through a series of hard-fought engagements with the Soviet partisans and regular forces in the Crimea in February 1943. After the formation of separate battalions, several of these were dispatched to Greece. The Azeri II. Battalion covered the retreat from Russia and was deployed to Warsaw after the onset of the Uprising 1944 to fight with the Dirlewanger unit. There and in subsequent engagements with the Red Army, it suffered heavy casualties, and surviving soldiers of II./Bergmann, together with Azeri from another Wehrmacht unit (I./111), formed the III. Battalion of the new Grenadier-Regiment 1607 (27 March 1945). They saw the end of the war at the West coast of Denmark.