Following the German invasion of the Soviet Union during World War II, the latter suffered massive casualties. Over one hundred Soviet divisions were disbanded due to losses in manpower. The Soviet State Defense Committee initiated the formation of hundreds of new divisions which were quickly forwarded to the front lines. Losses of materiel among the tank divisions and mechanized corps, meant that cavalry divisions remained the only tool available for the execution of deep operations and raids. On 13 November 1941, following the suggestion of General Inspector of the Cavalry Oka Gorodovikov, the Soviets began forming 20 National Cavalry Divisions and 15 National Rifle Brigades. The new units drew upon the peoples of the Autonomous Soviet Socialist Republics of the Soviet Union, in Northern Caucasus, Central Asia, the Urals and the Lower Volga Region. Unlike typical cavalry divisions, National Cavalry Divisions were equipped and sustained using the funds of the respective republics and their formation was overseen by the local communist party committees. Most officers were appointed from among the native nationality, in order to prevent the development of a language barrier.