 The Bolshevik authorities assigned to every unit of the Red Army a political commissar, or "politruk", who had the authority to override unit commanders' decisions if they ran counter to the principles of the Communist Party.Although this sometimes resulted in inefficient command according to most historians, the Party leadership considered political control over the military absolutely necessary, as the army relied more and more on officers from the pre-revolutionary Imperial period and understandably feared a military coup.This system was abolished in 1925, as there were by that time enough trained Communist officers to render the counter-signing unnecessary.