The Red Army had indeed suffered grievous losses during Operation Bagration: a total of 770,888 casualties of which 180,000 were ‘irrecoverable’. Army Group Centre losses may not have been so high at 399,102 killed, missing and wounded, but they were irreplaceable, and so were the guns and tanks abandoned in the retreat of over 500 kilometres. Overall, those three months alone accounted for a total of 589,425 Wehrmacht dead on the eastern front.
