During the offensive, the Red Army would drive the enemy from hardened cities. In such circumstances, the attacker always suffers heavy losses. Thus, command decided to create special assault teams known as engineering brigades. These new special forces would become known as the engineers or sappers of the Red Army, and their ranks were filled by a great number of technically competent professionals, capable of meeting a wide range of challenges.
These assault groups were armed mainly with automatic weapons. Shots were fired at short distances in often sudden conflicts, where most often the winner was the one who fired first. The low accuracy of their weapons was compensated by projectile density and rate of fire.