Ancient history of judo

The History Of Judo
Modern Judo as we know it was founded by Japan’s Dr. Jigoro Kano, who was born in 1860. Kano believed martial arts were a way to learn to live in harmony with others and studied Jiu-Jitsu under several masters in his youth. Kano’s search to find principles that unified the techniques he learned from his different masters led to the development of Judo’s first principle: maximum efficiency of physical and mental energy. Kano’s view was that only techniques that didn’t require using significant amounts of mental or physical energy should be incorporated into his system. His philosophy was that martial artists should learn ways to use their opponent’s aggression and energy against them. 
The resulting body of techniques he accumulated based on the first principle was called Judo. To push his art, Kano founded his first “Kōdōkan” (school) in 1982. Kano’s intent wasn’t to replace Jiu-Jitsu with Judo but to create a central style all Jiu-Jitsu masters could use to preserve their techniques, which were quickly being forgotten at the time as the popularity of modern sports increased. 
However, the opening of Kano’s first school led to campaigns claiming the new Kōdōkan Judo was superior to the older Jiu-Jitsu styles. This led to Judo’s first test against traditional Jiu-Jitsu styles at the Central Police Headquarters dojo in Japan. 
Both camps were allowed to choose 15 students to compete, and Kano selected his top students who finished with 13 wins and two draws. What was more impressive was that the rules for the tournament were in favour of the Jiu-Jitsu students. Fights couldn’t be won by throwing opponents on their backs as Judo rules dictate. Instead, the only ways these matches were won were by rendering your opponent unconscious, forcing them to submit, incapacitating them to the point they can’t continue fighting or killing them. Still, Judo players dominated their first cross-style match despite the gnarly rules. 
Techniques
Kōdōkan Judo is built around three major sets of techniques: Atemi-waza (striking), Katame-waza (grappling), and Nage-waza (throwing techniques). The throwing techniques were derived from Kitō-ryū, which can be broken down into Tachi-waza (standing techniques) and Sutemi-waza (sacrifice technique). The standing techniques used in Kōdōkan Judo include Te-waza (hand techniques), Ashi-waza (foot techniques), and Koshi-waza (hip techniques). 
Sacrifice techniques used in Judo include Ma-sutemi-waza (back sacrifice) and Yoko-sutemi-waza (side sacrifice). The grappling and striking techniques in Kōdōkan Judo were primarily drawn from Tenjin Shin’yō-ryū. The grappling techniques used can be broken into Kansetsu-waza (joint locks), Shime-waza (chokes), and Osaekomi-waza (holds). 
During the early days of Judo, joint locks and chokes were only taught to advanced students. Advanced students were also expected to learn how to train safely and resuscitate people who were choked out. 
The striking techniques originally used in Judo include fists, elbows, fingers, knees, hand-edge strikes, and kicks. These techniques were exclusively taught to high-ranking Judoka only. Classes were well-structured and techniques were organized in sets so they could be introduced slowly as a Judoka’s skills improved. Students were divided into two groups: “Mudansha” (unranked students) and “Yudansha” (black belts). The ranks served as an indication of each student’s skill level as well as the techniques they would be taught. Kano also added philosophy and a strict code of conduct to complete his martial art.
Students were expected to be outstanding examples of honest conduct and good character everywhere they went. Behavior that brought shame to the school would lead to a student’s suspension or expulsion.