In 1972, the Israel Karate Federation was formed and Dennis received the No1-grading card. The Federation committee began with the following members: Dennis Hanover, Sydney Faiga, Edmond Bozaglo, Harvey Sapir, Leon Pantanowitz, Inga De-Jong, and GideonKedari. Meir Yahel and Sue Katz later joined these members. In 1974, Dennis started a yearly championship in the memory of the fallen pupils who fell heroically in the battles for Israeli soil.

In 1975, the Israeli Karate team invited Dennis to participate in the First World Knock Down Oyama Kyokushin championship. Dennis fought William Oliver, the American captain and champion, and was rated one of the seven best fighters in the world. The fight was won by Dennis, but was designated as a draw because of anti-Zionist politics. As a result of this fight, Dennis received his 3rd Dan from Kancho Mas Oyama and was established as President of the Israeli Kyokushin Federation and received his 4th Dan from the Israeli Karate, Federation. In 1977, he was appointed President of the Israeli Karate Federation and in 1979 received his 5th Dan.

In 1983 Dennis received his 5th Dan Ju-Jitsu from the Original European Ju-Jitsu Union, by Mr Bell - life President, Dennis Survival Ju Jitsu was recognized as a modern style of Ju Jitsu and Dennis Hanover as its founder. In 1984 he received his 7th Dan and then his 8th, 9th and 10th Dan OEJJU. In 2004, Mr Bell, before he past away, appointed Dr. Dennis Hanover as his successor - the Life President of the OEJJU.

In 1985 Dennis Survival Ju Jitsu self defense short courses were introduced for the first time in the Herzlia school curriculum teaching more then 2,000 pupils a year. In 1986 DSJJ association became a recognized non-profit organization. DSJJ was taught to the police force, special units in the army and for many years Mitzpe Yam, a correctional institution for boys as well as with handicapped, mentally challenged people, violent husbands and children in needs. the Israeli Karate Federation and in 1979 received his 5th Dan.

In 1989, Dennis was awarded his 9th Dan in Survival from his high grades, receiving a Blue and White belt and later his 10th Dan (recognized internationally). From 1987-1990, 120 DSJJ pupils were certified by the Wingate Institute as instructors of Dennis Survival. In 1990, one of the largest project of its kind in Israel and in the world was opened in the city of Beer Sheva: teaching 20,000 school children Survival courses in a new DSJJ gym.

Over the years Many senior officials came to the Beer Sheva Martial Arts Center, including the Head of Police Security, prime ministers, and leading officials from Israel and other countries, to see the work of Dennis Survival in teaching unwanted and battered children at the center and in the schools.

From 1960 to 2003 Dennis Survival graded over 1,000 black belts and tens of thousands of pupils in Israel and around the world.

Dennis Hanover has been nominated for the Israel Prize three times. In 2000, he was recognized by the " World Head of family Sokeship Council International Hall of Fame" as a Grand Master, Soke, 10th Dan and recognized his style, in 2004 he was recognized as such by the South African Martial Arts Hall of Fame and established the Israeli Martial arts Hall of fame and the museum of the evolution of Martial Arts in Israel.

In Herzlia's center, Dennis established a 'Wall of Respect' for all the fallen soldiers and pupils who died. All those noted are individuals who have been part of the Dennis Survival family; some of them are true heroes.

"If you ask why I called the style I developed "Dennis Survival Ju-Jitsu," you'll find the answer quite simple. Where I come from, every day brought with it the necessity to fight for survival.

Survival is the story of my life."