1859 : Takeda Sokaku born
1860 : Kano Jigoro born
1882 : Kodokan established by Kano Jigaro
1883 : Morihei Ueshiba born
1883 : Jigaro Kano introduces Dan grading system to Judo (A first for any Japanese martial art)
1895 : Dai Nippon Butoku Kai 大日本武徳会 ("Greater Japan Martial Virtue Society") established
1900 : Kenji Tomiki born. (March 15th, Kakunodate, Akita)
1911 : Hideo Ohba born April 27, at Senhoku-gun, Akita Prefecture
1913 : Kenji Tomiki enters Yokote Junior-high, where he begins judo.
1915 : Morehei Ueshiba Morihei meets Takeda Sokaku at the Hisada Inn in Engaru, Hokkaido and starts training in Daitō-ryū Aiki-jūjutsu.
1919 : Tomiki Kenji awarded 1st Dan Judo.
1919 : Morehei Ueshiba joins the Ōmoto-kyō movement
1922 : Morehei Ueshiba receives a kyōju dairi (assistant teaching license) in Daitō-ryū Aiki-jūjutsu from Takeda Sokaku
1923 : Tomiki Kenji enters Waseda University to study Political Economics.
1923 : Tomiki Kenji joins Waseda Judo Club
1924 : Tomiki Kenji frequents Kodokan, meets Kano Jigaro
1924 : Senta Yamada born
1925: Ohba Hideo enters middle school and joins Judo Club taught by Ito Tokugoro 7th Dan
1926 : Tomiki meets Morihei Ueshiba via an introduction by Hidetaro Nishimura.
1927 : Tomiki Kenji graduates from Waseda with a degree in political science
1928 : Tomiki Kenji is awarded 5th Dan in Kodokan Judo
1928 : Tomiki Kenji starts studying Daitō-ryū Aiki-jūjutsu with Ueshiba Sensei at the Omoto HQ in Ayabe.
1929 : Kenji Tomiki represents Miyagi Prefecture in the first Judo competition held in front of the Emperor
1929 : Morehei Ueshiba moves to Tokyo, sets up main dojo
1930 : Ohba Hideo graduates as Club captain of his Middle School Judo Club
1931 : -------------" Manchurian Incident"
1931 : Hideo Ohba awarded 2nd Dan Kobukan Judo
1931 : Tomiki Kenji take up role as junior high school teacher in his hometown of Kakunodate
1931 : Hideo Ohba meets Kenji Tomiki at Kakunodate Prefectural Junior High School
1931 : Hideo began his service in the 17th regiment of the Akita infantry and was sent to the front lines in China
1931 : Kobukan Dojo (皇武館道場, imperial warrior training hall) in Tokyo finished (later to become Aikikai Honbu dojo)
1932 : The foundation of the nation of Manchuria was declared
1932 : The Society for the Promotion of Japanese Martial Arts was founded
1932 : Gozo Shioda starts learning Aiki-Budo under Morehei Ueshiba
1933 : Ohba Hideo demobilized and returned to Kakunodate Middle School as Tomiki Sensei’s assistant Judo teacher
1933 : Morihei Ueshiba becomes president of The Society for the Promotion of Japanese Martial Arts
1933 : Takeda Dojo established in Hyogo Prefecture, Ueshiba, chief instructor.
1933 : "Budo Renshu" published by Morehei Ueshiba, edited by senior student Kenji Tomiki
1934 : Tomiki Kenji resigns his teaching post in Kakunodate.
1935 : Hideo Ohba awarded 5th Dan Judo from Kodokan
1936 : Sokaku Takeda takes over the Asahi Shimbun dojo. Morihei Ueshiba departs..
1936 : Tomiki Kenji accepts a faculty position with Daido-gakuin (college) in Manchuria
1936 : Tomiki Kenji moves to Japanese occupied Manchuria and begins teaching Aiki-budo there
1937 : Kisshomaru Ueshiba (the second Doshu) starts training under his father
1938 : Tomiki Kenji accepts a faculty position at the University of Manchuria and starts the development of Aiki-bujutsu
1938 : Morihei Ueshiba publishes the technical manual “Budo“.
1938 : Jigaro Kano shihan passes away age 77
1939 : -------------WORLD WAR II gets underway
1940 : Morehei Ueshiba adopts the Dan grading system
1940 : Tomiki Sensei awarded first ever 8th Dan by Morehei Ueshiba (Aiki-budo)
1940 : Senta Yamada awarded 1st Dan Judo
1941 : Master Tomiki returns to Japan briefly to give a demonstration of his system of Aiki-bujutsu to Kodokan
1941 : -------------WWII : Pearl Harbour
1941 : Aiki-budo was assimilated into the Butokukai (a governmental body uniting all the martial arts under one organization)
1942 : The term "Aikido" comes into use for the first time.
(The name "Aikido" was reputedly coined by a member of a Dai-Nihon-Butokai committee, a Mr. Hisatomi (from the Kodokan)
1942 : Hideo Ohba ukes for Morehei Ueshiba at the Martial Arts Demonstration commemorating the tenth anniversary of the founding of Manchuria
1942 : Hideo Ohba awarded 5th Dan by Morhei Ueshiba
1942 : -------------WWII : Battle of Midway
1942 : Morehei Usehiba moves to lwama, leaving his son Kisshomaru to run the Tokyo dojo
1943 : Hideo Ohba receives 6th Dan from Morehei Ueshiba
1943 : Takeda Sokaku passes away aged 83
1944 : -------------WWII : Japanese evicted from Burma
1945 : -------------WWII : Russian Tanks roll into Manchuria
1945 : Kenji Tomiki sent to a Siberian concentration camp (Lake Balkhash)
1945 : -------------WWII: Atomic bomb dropped on Hiroshima, Nagasaki ends WWII
1945 : -------------Illegal to practice Martial Arts from 1945 until 1949 (*exception Aikido in 1948)
1945 : Ohba Hideo repatriated to Japan
1946 : Dai Nippon Butoku Kai dissolved
1946 : Koichi Tohei repatriated to Japan
1946 : Kisshomaru Ueshiba graduates from the Waseda University
1947 : Nariyama Tetsuro born
1948 : Tomiki Kenji repatriated to Japan from Russia
1948 : The Ministry of Education grants permission to re-establish teaching of "Aikido" because of its emphasis on peace.
1948 : Kisshomaru Ueshiba becomes chairman of the Central Aikido School (Hombu Dojo)
1948: Senta Yamada (now 5th Dan Judo, sent by Jigaro Kano) starts learning Aikido under Morehei Ueshiba and also trains under Kenji Tomiki
1949 : Ohba Hideo becomes vice-president of the Hiraka Branch of the Japan Judo Federation
1949 : Kenji Tomiki joined the faculty at Waseda University (Professor of Caligraphy) and teaches Judo
1949 : Fumiaki Shishida born
1950 : Gozo Shioda has started teaching
1950 : Kenji Tomiki becomes permanent manager of the All-Japan Judo Federation
1950 : Ohba Hideo appointed part-time judo instructor to Yokote Police Department
1950 : Hideo Ohba awarded 6th Dan kodokan Judo
1952 : Tomiki Sensei introduces 12 randori no kata techniques
1952 : Ohba Hideo appointed adviser to Judo Federation of Ogachi-Yuzawa
1953 : Dai Nippon Butoku Kai re-established
1953 : Tomiki Kenji tours the USA teaching Judo (and some Aikido) to servicemen
1953 : Koichi Tohei travels to Hawaii
1954 : Kenji Tomiki becomes Head of Physical Education at Waseda University and Chief Instructor of Judo Club
1954 : "Aikido Maki-no-ichi" published by Morehei Ueshiba, edited by Kisshomaru (Koetsu) Ueshiba
1954 : Gozo Shioda wins Award for Most Outstanding Demonstration in the All Japan Kobudo
1954 : Kenji Tomiki becomes a professor at Waseda University, publishes "Judo Taiso" a way of teaching aiki-no-jutsu using Judo principles.
1954 : Kenji Tomiki begins teaching at the National Police Academy
1955 : Gozo Shioda opens his own Aikido school, called "Yoshinkan"
1956 : Judo Goshin Jutsu Kata created (in collaboration with Tomiki Sensei)
1956 : Kenji Tomiki and Tadao Otaki gave the first public demonstration of the Goshin Jutsu no Kata at the Kagami Biraki in 1956 at the Nippon Budokan.
1956 : "Judo and Aikido" book by Kenji Tomiki translated into English
1956 : Koichi Tohei is Shihan Bucho (Chief Instructor) of Tokyo Honbu
1958 : "Official" Waseda University Aikido Club established by Tomiki Kenji giving birth officially to Competitive Aikido
1958 : Tomiki Kenji publishes "Aikido Nyūmon"
1958 : Tomiki Kenji Sensei made unwelcome in the Tokyo Hombu Dojo
1959 : Yamada Shihan travels to the U.K to teach Judo and "Tomiki Aikido"
1960 : Hideo Ohba joins Kenji Tomiki at Waseda University, starts developing Koryu Kata
1961 : Senta Yamada publishes “The Ancient Secrets of Aikido”
1961 : Gozo Shioda receives 9th Dan
1961 : Kenji Tomiki publishes "Shin Aikido Text" (The new aikido textbook)
1964 : Judo introduced into Olympic Games for the first time
1965 : Senta Yamada leaves the UK, returns to Japan
1966 : Tetsuro Nariyama enters Kokusshikan University, joins Aikido club and meets Kenji Tomiki.
1966 : British Aikido Association (BAA) is formed to amalgamate all "Tomiki Aikido" clubs in the UK
1966 : Nariyama Tetsuro starts training under Hideo Ohba at Kokushikan University
1967 : Shodokan Dojo opened in Osaka by Tomiki Kenji, (giving birth to the term "Shodokan Aikido")
1968 : Japan Martial Arts Research Society established. Kenji Tomiki member of the founding committee
1969 : The first Championships of the British Aikido Association held
1969 : Morehei Ueshiba (O Sensei) passes away
1970 : Koichi Tohei receives 10th Dan
1970 : First Major Open Aikido (Competitive) Tournament
1970 : Tomiki Sensei Retires from Waseda University
1970 : Nariyama Tetsuro becomes Chief Instructor at Shodokan
1971 : Koichi Tohei ordered not to teach his system inside Tokyo Honbu Dojo
1971: Koichi Tohei establishes the International Ki Association
1974 : Koichi Tohei severs ties with Aikikai
1974 : Kenji Tomiki publishes “Introduction to Goshinjutsu” (護身術入門)
1975 : Japanese Aikido Association (JAA) formed, Kenji Tomiki appointed president
1975 : Tomiki Kenji becomes Vice President of The Nippon Budo Gakkai (The Martial Art Society Of Japan).
1975 : Tetsuro Nariyama becomes uchideshi to Hirokazu Kobayashi Shihan (Aikikai)
1976 : Shodokan dojo rededicated in a new building in Osaka.
1977 : First National Aikido tournament held in Osaka Castle
1977 : Tomiki Shihan travels to Australia with assistant Shishida Fumiaki
1978 : Kenji Tomiki awarded 8th Dan Kodokan Judo
1978 : Tomiki shihan diagnosed with intestinal cancer
1778 : Hideo Obha awarded 9th Dan from JAA by Kenji Tomiki
1979 : Tomiki shihan passes away age 79 on December 25th
1979 : Hideo Ohba becomes 2nd President/chair of JAA and director of Shodokan
1984 : International Martial Arts Federation honours Gozo Shioda with 10th dan
1985 : Tetsuro Nariyama succeeds Hideo Ohba at Kokushikan
1985 : "Aikido Kyougi" published by Nariyama Tetsuro & Shishida Fumiaka
1986 : Hideo Ohba passes away age 75
1986 : Fusae Tomiki (Kenji Tomiki's widow) became the 3rd President/Chair of the Japan Aikido Association
....updated last on 25/3/2020