During World War II, the question of quickly preparing ordinary residents for real hand-to-hand combat arose sharply. The best teachers of the USSR were ordered to develop a combat system that could teach any person to fight in 2-3 months. The basis included the best blows of all world combat systems. Everything that could be excluded from it was excluded. The system was supposed to be simple and efficient. Thus, the NKVD boa system was born. This is one of the few systems that produces a dynamic stereotype in a person, so that you do not think during the battle about which blow to strike, your brain makes decisions with lightning speed, and you hit the target at the speed of a bullet.