ROA (Free Russian Army) soldiers on parade, 1944.  The ROA shield is worn on the left sleeve; collar patches suggest a Cossack unit.  Most of these soldiers are prominently equipped with an "entrenching tool" (short-handled shovel) carried on the belt.  Apart from its use in digging trenches and foxholes, these tools doubled as very useful weapons in the event of hand-to-hand combat.  Such situations  occurred in WW1 quite often; entrenching tools were often used as weapons in the course of WW1 trench raiding in WW1.  In WW2 such situations arose, perhaps, somewhat less so.   Best regards, JR.

"Free Russians" of the Heer.

German mountain division troops in the forest on the eastern front. The soldier in the foreground is armed with an assault rifle StG 44.

In the forest

SS soldiers belonging to the "Das Reich" Division, signal to the pilots of German bombers, identifying themselves with the Nazi flag, in the Belgorod area (1943). 
On the left is an anti-aircraft self-propelled Sd.Kfz. 4.10, built on the chassis of a half-tracked tractor with a 20-mm anti-aircraft gun FlaK 30.