Do you know, in Private Ryan, the two "German" soldiers who are executed on spot during the Omaha beach invasion were not German soldiers and they were not speaking German.

They were speaking Czech begging ...

“Please don’t shoot me! I am not German, I am Czech, I didn’t kill anyone! I am Czech!"

They were "ost-bataillone" which were conscripted into the German army forcefully drafted from POW camps.