Education
Born in the Tosa Domain on Shikoku island (present day Kōchi prefecture), Yui graduated from the 5th class of the Imperial Japanese Army Academy in 1882 and 7th class of the Army Staff College in 1891.
由比 光衛
Born in the Tosa Domain on Shikoku island (present day Kōchi prefecture), Yui graduated from the 5th class of the Imperial Japanese Army Academy in 1882 and 7th class of the Army Staff College in 1891.
He was assigned to staff positions within the Imperial General Headquarters on graduation. Serving as a staff officer during the First Sino-Japanese War and the Boxer Rebellion, Yui developed a reputation as a competent officer Yui was sent as a military attaché to Great Britain from 1895-1899.
After promotion to major general in 1907, Yui continued to serve under General Oku as chief of the Imperial Japanese Army General Staff"s Operations Section, until his promotion to lieutenant general and promotion to commandant of the Army Staff College in 1914, remaining in this post through most of Japan"s involvement during World War I.
The following year, Yui become a full general and was in command of Japanese garrison at Tsingtao from 1919 until 1922.
Resigning from active duty in 1923, Yui lived in retirement until his death in 1940.