Spetsnaz
The most prominent of these new recruits was Viktor Leonov, who joined the Soviet Navy in 1937. He was assigned to a submarine training detachment and then moved to a repair station in the Northern Fleet at Polyarnyy. Leonov had trained as a scuba diver, after which he joined 4th Special Volunteer Detachment, where he conducted numerous secret operations and twice being awarded the title of Hero of the Soviet Union.