Aikido was formalized as a modern martial art during the first half of the twentieth century. Tracing roots back over 700 years, this method of Budo was refined by Master Morihei Ueshiba. O'Sensei — Great Teacher, as he is now known — was born on December 14, 1883 in Tanabe, Wakayama Prefecture, Japan. While young he studied sumo wrestling and swimming to improve his slight frame. In 1901 he moved to Tokyo, setting up his own stationery and school supply store. It was there he first began to study the martial arts, learning jujitsu and kenjutsu.
Morihei spent 1903 through 1907 fighting in the Russo-Japanese War. After returning to civilian life he studied with Sokaku Takeda, master of Daito-ryu, eventually earning a certificate in Daito-ryu jujitsu. In mid-November 1919, traveling home to Tanabe to see his ailing father, he detoured through Ayabe where he encountered the religion Omoto-kyo, renowned for its meditation techniques that “calmed the spirit, returning it to the divine.” His father passed away in January 1920, and the grieving Morihei returned to the Omoto-kyo leader Onisaburo Deguchi, spending the next eight years there in pursuit of a more spiritual life — converting part of his home into an eighteen-mat dojo.
It was during this period that his martial arts began to take on a deeper spiritual character. By 1922 his approach was known as aiki-bujutsu. In 1924 he joined an ill-fated expedition to Manchuria and was only returned to Japan through the intervention of the Japanese consulate. After his return he developed a refined intuitive sense of knowing where an attack was coming from before it arrived.
The spring of 1925 proved to be transformative. He met the challenge of a naval officer, a master of Kendo, defeating him without once being touched — anticipating and evading each attack as it came. Afterward, at a well, he later described “being bathed in a golden light pouring down from the heavens,” a moment of complete serenity of body and spirit that led him to the philosophical principles upon which modern Aikido is based. He renamed his art aiki-budo.
By 1927 Morihei had moved to Tokyo to devote all of his energies to teaching. In April 1931 a full-scale, eighty-mat dojo was inaugurated. Aiki-budo flourished over the next decade, attracting students from all walks of life. It was during the disruption of World War II that the term Aikido was first used. After the war, on February 9, 1948, the Ministry of Education granted permission for the reestablishment of the Aikikai. Headquarters moved to Tokyo in 1954 as the Aikikai Foundation: The Hombu Dojo of Aikido.
January 12, 1968 saw the completion and commemorative ceremony of the new three-story Hombu Dojo building. Later that year O'Sensei gave what would be his last public demonstration. Morihei Ueshiba passed away peacefully on April 26, 1969, at the age of 86.