As Soviet defeats continued into 1942, Stalin issued Order 227 that authorized a series of punitive measures against Soviet soldiers. The Red Army was ordered to form its own units of blocking troops to stiffen its soldiers, apparently there being insufficient NKVD units to go around.
Barrier troops were used from September 1941 in some situations, however not routinely and everywhere, with exception of penal batallions.
Red Army blocking troops were not a great success, soldiers being reluctant to fire on their own, unlike the NKVD, and the innovation was quietly dropped later, leaving the NKVD again responsible for battlefield discipline.
According to what I have read only about 10,000 soldiers were executed for desertion.
Tell us more how the SMERSH was everywhere AND THEY FUCKING MOWED DOWN THEIR OWN MEN!!!!!!!!
Actual facts say otherwise, but please continue with your fairy tales.
Maybe stop getting your facts from the movie "Enemy at the Gates".
I bet you believe the ol "Roots" myth about old fat white men wearing goofy clothing stumbling through the African jungle carrying a blunderbuss, and throwing nets on friendly African natives, because you saw it on TV.