> Yes, how many Confederate soldiers, and German soldiers on the Eastern
Front
> in WWII, were buried in mass graves? My guess is a lot.
Yes, and it definitely happened a lot in World War I. Don't be fooled by the pictures of neat rows of headstones. I've visited one at Fromelles in northern France. It has no headstones and contains the body of my great-uncle and 5000 other Australians --- all of them killed in the space of two days in July 1916. There was a separate German cemetery from the same battle just up the road. And a British one from 1914 not too far away.