The Soviet Union comprised of many republics, including those in Central Asia with many different peoples like the Kazakhs, Tajiks, Tartars, Kyrgyz, Uzbeks, and many other Asian or Turkic peoples. Many Siberian units comprised of peoples sourced from beyond or in the Ural mountains. Siberian divisions would see great use in the counter offensive following the stalling of Operation Typhoon to take Moscow in the winter of 1941 and in Operation Uranus and Saturn that resulted in the encirclement of the German Sixth army at Stalingrad. I don't have exact numbers with me, but there were many thousands sourced from the levee en masse imposed on central asia. Testimony in Anthony Beevor's Stalingrad made mention that troops from these areas spoke spoor Russian and weren't as familiar with modern technology; making them more apt to panic when encountering attacks by aircraft or tanks. Nonetheless these formations proved invaluable as reserves to be used against the Germans in the winters of 1941, and 42/43