Baron was a lieutenant general in the

Imperial Japanese Army The was the official ground-based armed force of the Empire of Japan from 1868 to 1945. It was controlled by the Imperial Japanese Army General Staff Office and the Ministry of the Army, both of which were nominally subordinate to the Emperor o ...

and

Minister of War A defence minister or minister of defence is a cabinet official position in charge of a ministry of defense, which regulates the armed forces in sovereign states. The role of a defence minister varies considerably from country to country; in som ...

during

World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

Biography

Oka was born in

Hagi Hagi, Hadži, or Hadzhi (Хаджи) is a name derived from hajji, an honorific title given to a Muslim person who has successfully completed the Hajj to Mecca, which was later adopted by Christian peoples as a word for ''pilgrim''. People Surname ...

Chōshū domain The , also known as the , was a domain (''han'') of the Tokugawa Shogunate of Japan during the Edo period from 1600 to 1871.Deal, William E. (2005) ''Handbook to Life in Medieval and Early Modern Japan,'' p. 81 The Chōshū Domain was base ...

(present day

Yamaguchi Prefecture is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Yamaguchi Prefecture has a population of 1,377,631 (1 February 2018) and has a geographic area of 6,112 Square kilometre, km2 (2,359 Square mile, sq mi). Y ...

as the second son of a

samurai were the hereditary military nobility and officer caste of medieval and early-modern Japan from the late 12th century until their abolition in 1876. They were the well-paid retainers of the '' daimyo'' (the great feudal landholders). They h ...

retainer of the Mori clan. He graduated from the Osaka Foreign Languages School followed by the 4th class of the Imperial Japanese Army Academy in 1881, and from the 4th class of the Army Staff College in 1888. Oka served as Vice Commander of the IJA 8th Infantry Brigade, and subsequently as squad leader in the IJA 20th Infantry Regiment. During the

First Sino-Japanese War The First Sino-Japanese War (25 July 1894 – 17 April 1895) was a conflict between China and Japan primarily over influence in Korea. After more than six months of unbroken successes by Japanese land and naval forces and the loss of the po ...

, he was on the staff of the IJA 1st Division, which was engaged in the brunt of combat operations during that conflict. After the war, Oka served in various administrative and staff positions within the Imperial Japanese Army General Staff. At the time of the

Russo-Japanese War The Russo-Japanese War ( ja, 日露戦争, Nichiro sensō, Japanese-Russian War; russian: Ру́сско-япóнская войнá, Rússko-yapónskaya voyná) was fought between the Empire of Japan and the Russian Empire during 1904 and 1 ...

, he was the vice chief of the Military Affairs Department. Oka was promoted to

major general Major general (abbreviated MG, maj. gen. and similar) is a military rank used in many countries. It is derived from the older rank of sergeant major general. The disappearance of the "sergeant" in the title explains the apparent confusion of a ...

in 1905. He subsequently commanded the IJA 27th Infantry Brigade and the IJA 29th Infantry Brigade before being promoted to

lieutenant general Lieutenant general (Lt Gen, LTG and similar) is a three-star military rank (NATO code OF-8) used in many countries. The rank traces its origins to the Middle Ages, where the title of lieutenant general was held by the second-in-command on the ...

in February 1912, and commander of the

IJA 3rd Division The was an infantry division in the Imperial Japanese Army. Its call sign was the . History The 3rd Division was formed in Nagoya in January 1871 as the , one of six regional commands created in the fledgling Imperial Japanese Army. The Nagoya ...

in 1913. In April 1914, Oka became

under

Prime Minister A prime minister, premier or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister is not ...

Ōkuma Shigenobu Marquess was a Japanese statesman and a prominent member of the Meiji oligarchy. He served as Prime Minister of the Empire of Japan in 1898 and from 1914 to 1916. Ōkuma was also an early advocate of Western science and culture in Japan, and ...

. During his tenure, he was steadfastly uncompromising in his demands for an increased Army budget to raise two new infantry divisions for

Korea Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic o ...

, and strongly rejected arguments by Finance Minister Wakatsuki Reijiro that unbridled military expenditures was bankrupting the nation. On then other hand, Oka unexpectedly opposed his mentor

Yamagata Aritomo ''Gensui (Imperial Japanese Army), Gensui'' Prince , also known as Prince Yamagata Kyōsuke, was a senior-ranking Japanese people, Japanese military commander, twice-elected Prime Minister of Japan, and a leading member of the ''genrō'', an � ...

in many political issues, siding with Okuma Shigenobu and Kato Takaaki against the ''

Rikken Seiyūkai The was one of the main political parties in the pre-war Empire of Japan. It was also known simply as the ''Seiyūkai''. Founded on September 15, 1900, by Itō Hirobumi,David S. Spencer, "Some Thoughts on the Political Development of the Japane ...

''. He resigned in March 1916 due to ill health, and was ennobled with the title of

baron Baron is a rank of nobility or title of honour, often hereditary, in various European countries, either current or historical. The female equivalent is baroness. Typically, the title denotes an aristocrat who ranks higher than a lord or knig ...

(''danshaku'') under the ''

kazoku The was the hereditary peerage of the Empire of Japan, which existed between 1869 and 1947. They succeeded the feudal lords () and court nobles (), but were abolished with the 1947 constitution. Kazoku ( 華族) should not be confused with ' ...

'' peerage system just before his death in July of the same year.

Decorations

* 1895 –

Order of the Rising Sun The is a Japanese order, established in 1875 by Emperor Meiji. The Order was the first national decoration awarded by the Japanese government, created on 10 April 1875 by decree of the Council of State. The badge features rays of sunlight ...

, 6th class * 1895 – JPN Kinshi-kunsho 4Class BAR

Order of the Golden Kite, 4th class * 1900 – JPN Zuiho-sho (WW2) 5Class BAR

Order of the Sacred Treasure The is a Japanese order, established on 4 January 1888 by Emperor Meiji as the Order of Meiji. Originally awarded in eight classes (from 8th to 1st, in ascending order of importance), since 2003 it has been awarded in six classes, the lowest ...

, 5th class * 1906 – JPN Kyokujitsu-sho 2Class BAR

, 2nd class * 1906 – JPN Kinshi-kunsho 3Class BAR

Order of the Golden Kite, 3rd class * 1914 – JPN Zuiho-sho (WW2) 1Class BAR

Grand Cordon of the Order of the Sacred Treasure * 1916 – JPN Kyokujitsu-sho 1Class BAR

Grand Cordon of the Order of the Rising Sun『官報』第1310号・付録「辞令」」December 13, 1916

References

* * * *

Notes

{{DEFAULTSORT:Oka, Ichinosuke 1860 births 1916 deaths People from Chōshū domain Military personnel from Yamaguchi Prefecture Japanese generals Kazoku Japanese military personnel of the First Sino-Japanese War Japanese military personnel of the Russo-Japanese War Japanese people of World War I Ministers of the Imperial Japanese Army Grand Cordons of the Order of the Rising Sun Recipients of the Order of the Sacred Treasure, 1st class Recipients of the Order of the Golden Kite