Oschepkov and Spiridonov did have occasion to collaborate, their efforts were not completely united. Each technique was carefully dissected and considered for its merits, and if found acceptable in unarmed combat, refined to reach sambo's ultimate goal: to stop an armed or unarmed adversary in the least time possible. Thus, many techniques from jujutsu, judo, and other martial systems joined with the indigenous fighting styles to form the sambo repertoire. When the techniques were perfected, they were woven into sambo applications for personal self-defense, police, crowd control, border guards, secret police, dignitary protection, psychiatric hospital staff, military, and commandos. Development In 1918, Lenin created Vsevobuch (General Military Training) under the leadership of N. I. Podvoyskiy to train the Red Army. The task of developing and organizing Red Army military hand-to-hand combat training fell to K. Voroshilov, who in turn, created the NKVD physical training center, Dynamo Sports Society. Spiridonov was a combat veteran of World War I and one of the first wrestling and self-defense instructors hired for Dynamo. His background included Free wrestling (i.e. Catch wrestling), Greco-Roman wrestling, many Turkic folk wrestling styles, and Japanese jujutsu. As a combative investigator for Dynamo, he traveled to Mongolia and China to observe their native fighting styles. In 1923, Oschepkov and Spiridinov collaborated (independently) with a team of other experts on a grant from the Soviet government to improve the Red Army's hand-to-hand combat system. Spiridonov had envisioned integrating the most practical aspects of the world's fighting systems into one comprehensive style that could adapt to any threat. Oschepkov had observed Kano Jigoro's distillation of Tenjin Shinyo Ryu, Kito Ryu and Fusen-ryū jujutsu into judo, and he had developed the insight required to evaluate and integrate combative techniques into a new system. Their developments were supplemented by Anatoly Kharlampiyev and I. V. Vasiliev who also traveled the globe to study the native fighting arts of the world. Ten years in the making, their catalog of techniques was instrumental in formulating the early framework of the art to be eventually referred to as sambo. Kharlampiyev is often called the "father of sambo". This may be largely semantics since only he had the longevity and political connections to remain with the art while the new system was named "sambo". However, Kharlampiyev's political maneuvering is single-handedly responsible for the USSR Committee of Sport's accepting sambo as the official combat sport of the Soviet Union in