Hiwi.

This is coolbert:

"It is disturbing that we are forced to strengthen our fighting troops with Russian prisoners of war, who are already being turned into gunners. It's an odd state of affairs that the 'Beasts' we have been fighting against are now living with us in closest harmony." - - German Colonel Helmuth Groscurth, WW2.

All thanks here to Mark Felton and his You Tube video: "Stalingrad Holdouts - German Resistance After the Surrender"

German army troops at Stalingrad but NOT necessarily Germans? 

Think rather Hiwi. Soviet citizens and volunteers for the German army?

"Hiwi the German abbreviation of the word Hilfswilliger or, in English, auxiliary volunteer, designated, during World War II, the member of different kinds of voluntary auxiliary forces made up of recruits indigenous to the territories of Eastern Europe occupied by Nazi Germany."

Rather extraordinary numbers of Hiwi embedded within the 6th Army.

“'Russian units' [6th Army at Stalingrad] of the Wehrmacht . . . In some divisions the number of Hiwi reached 27%. Soviet historiography preferred to keep silent about it."

Holdouts at Stalingrad as deemed by Mark Felton perhaps better understood as mix of German and Hiwi. The latter being predominant I might think!

"Hiwi along with the Nazis continued to carry out guerrilla war in a network of [the] Stalingrad dungeon. The most significant was in the area of [the] Confectionery factory, where on the eve of the surrender of the Germans with the involvement of prisoners of war and civilians built a underground city."

BY SOME ESTIMATES ABOUT ONE MILLION HIWI SERVED IN GERMAN ARMY IN SOME CAPACITY DURING THE WAR.

coolbert.