However, self-defense was based strictly upon the scientific and dynamic principles of the human body.In 1965 judo training was added as part of the Krav Maga training, and until 1968 there were no grades in Krav Maga.From the outset, the original concept of Krav Maga was to take the most simple and practical techniques of other fighting styles (originally European boxing, wrestling and street fighting) and to make them rapidly teachable to military conscripts.Closely related variations have been developed and adopted by Israeli law enforcement and intelligence organizations.Then a trainee's grades were determined largely by his knowledge in judo.In 1968 Eli Avikzar, Imi's principal student and first black belt, began learning aikido and in 1971 left for France where he received a brown belt in aikido.
Having become a thorn in the side of the equally anti-Semitic local authorities, in 1940 Lichtenfeld left his home with his family and friends on the last refugee ship to escape Europe.
Shortly after, in 1976, Eli joined the permanent force of IDF, as head of the Krav Maga section. Up to this date, Eli had trained 80,000 male soldiers and 12,000 female soldiers.
The role of Krav Maga in the army advanced greatly after Eli's appointment. Then in 1978 the Krav Maga association was established, and in 1989, as an active member of the judo association, Eli Avikzar helped to establish the professional and rank committees by founding the Israeli Krav Maga Association (IKMA or KAMI).
Attacks are aimed at the most vulnerable parts of the body, and training is not limited to techniques that avoid severe injury; some even permanently injure or cause death to the opponent.
Students learn to defend against all variety of attacks and are taught to counter in the quickest and most efficient way.
It was derived from the street-fighting experience of Hungarian-Israeli martial artist Imi Lichtenfeld, who made use of his training as a boxer and wrestler as a means of defending the Jewish quarter against fascist groups in Bratislava, Czechoslovakia, in the mid-to-late 1930s.