Two partisans pose in a village in the Bryansk region. The one on the right is armed with a captured German MP-40 submachine gun.

Two partisans

Soviet 37 mm automatic air defense gun M1939 70-K; crew is wearing winter clothing.

Soviet air defense

NKVD officers setting up a gun machine behind the defensive line August/September 1942. 

On July 28. 1942 Stalin issued the notorious Order 227, demanding that commanders create “blocking detachments” to prevent any unauthorized withdrawals from the battles. 

The order had such a negative effect on the soldiers' morale that many commanders disobeyed it, and 3 months later it was  dropped. 

Note that official Russian history today refuses to acknowledge such barbarity committed within the Red Army. The same goes for the notorious "human wave" attacks, which are a no-topic in Russia today.