was the sixth head of a cadet branch of the Japanese imperial family, and a career army officer who served as Chief of the Imperial Japanese Army General Staff from 1931 to 1940. During his tenure as the Chief of the Imperial Japanese Army General Staff, the Imperial Japanese Army committed numerous war crimes against Chinese civilians including the Nanking massacre and the systemic use of chemical and bacteriological weapons. Prince Kan'in Kotohito died several months before the end of the Second World War and was not tried for war crimes. Early years Prince Kotohito was born in Kyoto on November 10, 1865 as the sixteenth son of Prince Fushimi Kuniye (1802–1875). His father was the twentieth head of the Fushimi-no-miya, one of the four shinnōke, branches of the Imperial Family which were eligible to succeed to the throne if the main line should die out. Since the infant mortality rate in the main imperial household was quite high, Emperor Kōmei, the father of Emperor Meiji, adopted Prince Kotohito as a potential heir. Prince Kotohito was thus the adopted brother of Emperor Meiji and a great uncle to both Emperor Shōwa and his consort, Empress Kōjun. Prince Kotohito was initially sent to Sambō-in monzeki temple at the age of three to be raised as a Buddhist monk, but was selected in 1872 to revive the Kan'in-no-miya, another of the shinnōke households, which had gone extinct upon the death of the fifth head, Prince Naruhito. Marriage and family On December 19, 1891, Prince Kotohiko married Sanjō Chieko (January 30, 1872 – March 19, 1947), a daughter of Prince Sanjō Sanetomi. The couple had seven children: five daughters and two sons. Early military career Prince Kan'in entered the Imperial Japanese Army Academy in 1877 and graduated in 1881. Emperor Meiji sent him as a military attaché to France in 1882 to study military tactics and technology. He graduated from the Army Staff College in 1894, specializing in cavalry. He commanded the 1st Cavalry Regiment from 1897 to 1899. Kan'in became a veteran of both the First Sino-Japanese War (1894–1895) and the Russo-Japanese War (1904–1905). He was appointed to command the 2nd Cavalry Brigade in 1901. He rose to the rank of lieutenant general in 1905 and became the commander of the IJA 1st Division in 1906, and the Imperial Guard Division in 1911. He was promoted to the rank of full general