Background
lchinosuke Oka was born in1860 in Yamaguchi, Japan.
lchinosuke Oka was born in1860 in Yamaguchi, Japan.
He graduated from the Military Academy in 1881 and the Military College in 1887.
lchinosuke Oka was appointed a lieutenant general in 1912 and then commander of the Third Division. He was made a baron for having set up two divisions in Korea. He was War Minister in the Okuma Cabinet in 1914.