The Eastern Front of WW2 remains one of the largest bloodbaths in the entire history of humanity. More than 30 million individuals are estimated to have lost their lives in the period between June 1941 and April 1945. Of these, around 10 million were combat related deaths, the rest being civilians.
Additionally, another 50 to 100 million are estimated to have been wounded during the severe fighting on this somewhat forgotten front.

German troops, likely of the Sixth Army surrender en-masse to Soviet troops during the defense and subsequent encirclement of Stalingrad.
German anti-tank cannon engages Soviet T34 tank at extreme long range.