The eastern front saw some of the most horrific fighting of the war. Between the brutal nature of the fighting, the atrocities committed by both sides and the crimes against humanity committed against civilians, it seems there must have been major psychological fallout after the war.
How did the remaining population deal with the inevitable mental illnesses spawned by the war itself?
The question -- How did the Soviet Union deal with PTSD cases after WWII? was asked a few years ago. It may cover what you are asking, or be a good starting point.