The results of the civil war were momentous. Soviet demographer Boris Urlanis estimated the total number of men killed in action in the Civil War and Polish–Soviet War as 300,000 (125,000 in the Red Army, 175,500 White armies and Poles) and the total number of military personnel dead from disease (on both sides) as 450,000. Boris Sennikov estimated the total losses among the population of Tambov region in 1920 to 1922 resulting from the war, executions, and imprisonment in concentration camps as approximately 240,000.