Baron was an admiral in the

Imperial Japanese Navy The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, when it was dissolved following Japan's surrender ...

and served twice as

Minister of the Navy of Japan The was a cabinet-level ministry in the Empire of Japan charged with the administrative affairs of the Imperial Japanese Navy (IJN). It existed from 1872 to 1945. History The Navy Ministry was created in April 1872, along with the Army Minist ...

during the volatile 1930s.

Biography

Early life

Ōsumi was born in what is now the city of

Inazawa, Aichi is a city located in Aichi Prefecture, Japan. , the city had an estimated population of 135,580 in 54,999 households, and a population density of . The total area of the city was . Geography Inazawa is located in the flatlands of far western Aic ...

. He was a graduate of the 24th class of the

Imperial Japanese Naval Academy The was a school established to train line officers for the Imperial Japanese Navy. It was originally located in Nagasaki, moved to Yokohama in 1866, and was relocated to Tsukiji, Tokyo in 1869. It moved to Etajima, Hiroshima in 1888. Students stu ...

, where he placed 3rd out of 18 cadets. He served as

midshipman A midshipman is an officer of the lowest rank, in the Royal Navy, United States Navy, and many Commonwealth navies. Commonwealth countries which use the rank include Canada (Naval Cadet), Australia, Bangladesh, Namibia, New Zealand, South Afr ...

on the

corvette A corvette is a small warship. It is traditionally the smallest class of vessel considered to be a proper (or " rated") warship. The warship class above the corvette is that of the frigate, while the class below was historically that of the slo ...

cruiser A cruiser is a type of warship. Modern cruisers are generally the largest ships in a fleet after aircraft carriers and amphibious assault ships, and can usually perform several roles. The term "cruiser", which has been in use for several hu ...

and

battleship A battleship is a large armored warship with a main battery consisting of large caliber guns. It dominated naval warfare in the late 19th and early 20th centuries. The term ''battleship'' came into use in the late 1880s to describe a type of ...

. After being commissioned as

ensign An ensign is the national flag flown on a vessel to indicate nationality. The ensign is the largest flag, generally flown at the stern (rear) of the ship while in port. The naval ensign (also known as war ensign), used on warships, may be diffe ...

, he was assigned to the cruiser and then the cruiser on its voyage to

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

in 1899.

Naval career

After his return, Ōsumi was promoted to

lieutenant A lieutenant ( , ; abbreviated Lt., Lt, LT, Lieut and similar) is a commissioned officer rank in the armed forces of many nations. The meaning of lieutenant differs in different militaries (see comparative military ranks), but it is often sub ...

, and served as chief navigator on the cruisers and , and the patrol ship ''Manshu'' during 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 ...

. While on ''Matsushima'', he participated in the

Battle of Port Arthur The of 8–9 February 1904 marked the commencement of the Russo-Japanese War. It began with a surprise night attack by a squadron of Japanese destroyers on the neutral Russian fleet anchored at Port Arthur, Manchuria, and continued with an en ...

and other combat engagements. He was awarded the

Order of the Golden Kite The was an order of the Empire of Japan, established on 12 February 1890 by Emperor Meiji "in commemoration of Jimmu Tennō, the Romulus of Japan". It was officially abolished 1947 by the Supreme Commander for the Allied Powers (SCAP) during th ...

, 5th class on 1 April 1906. After the end of the war, Ōsumi returned to the

Naval War College The Naval War College (NWC or NAVWARCOL) is the staff college and "Home of Thought" for the United States Navy at Naval Station Newport in Newport, Rhode Island. The NWC educates and develops leaders, supports defining the future Navy and associat ...

, emerging as a

lieutenant commander Lieutenant commander (also hyphenated lieutenant-commander and abbreviated Lt Cdr, LtCdr. or LCDR) is a commissioned officer rank in many navies. The rank is superior to a lieutenant and subordinate to a commander. The corresponding rank i ...

on 29 September 1906. After serving in a number of staff positions, Ōsumi was assigned as

naval attaché A navy, naval force, or maritime force is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake-borne, riverine, littoral, or ocean-borne combat operations and related functions. It include ...

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...

from 27 January 1909 to 1 December 1911. On his return to Japan, Ōsumi was promoted to

commander Commander (commonly abbreviated as Cmdr.) is a common naval officer rank. Commander is also used as a rank or title in other formal organizations, including several police forces. In several countries this naval rank is termed frigate captain. ...

, and was assigned as aide-de-camp to Fleet Admiral

Tōgō Heihachirō Marshal-Admiral Marquis , served as a '' gensui'' or admiral of the fleet in the Imperial Japanese Navy and became one of Japan's greatest naval heroes. He claimed descent from Samurai Shijo Kingo, and he was an integral part of preserving ...

. He spent a year as

executive officer An executive officer is a person who is principally responsible for leading all or part of an organization, although the exact nature of the role varies depending on the organization. In many militaries and police forces, an executive officer, o ...

on the

battlecruiser The battlecruiser (also written as battle cruiser or battle-cruiser) was a type of capital ship of the first half of the 20th century. These were similar in displacement, armament and cost to battleships, but differed in form and balance of attr ...

from 1913 to 1914, returning to staff positions until 1 December 1917, when he received his first command: the battleship . From 1 December 1918 – 1 July 1921, Ōsumi was appointed as military attaché to France. During that time, he was a participant in the Japanese delegation to the

Versailles Peace Treaty The Treaty of Versailles (french: Traité de Versailles; german: Versailler Vertrag, ) was the most important of the peace treaties of World War I. It ended the state of war between Germany and the Allied Powers. It was signed on 28 June 1 ...

negotiations. Also during this period, on 1 December 1920, he was promoted to

rear admiral Rear admiral is a senior naval flag officer rank, equivalent to a major general and air vice marshal and above that of a commodore and captain, but below that of a vice admiral. It is regarded as a two star "admiral" rank. It is often regarde ...

. After his return to Japan, Ōsumi served as Director of the Bureau of Naval Affairs in 1922, and was promoted to vice admiral in 1924, Vice Minister of the Navy in 1925, commander-in-chief of the

IJN 2nd Fleet The was a fleet of the Imperial Japanese Navy (IJN) created as a mobile strike force in response to hostilities with Russia, and saw action in every IJN military operation until the end of World War II. History Established on 27 October 1903, ...

in 1928, and Commander in Chief of the

Yokosuka Naval District was the first of four main administrative districts of the pre-war Imperial Japanese Navy. Its territory included Tokyo Bay and the Pacific coasts of central and northern Honshū from the Kii Peninsula to Shimokita Peninsula. Its headquarters, a ...

in 1929. He was promoted to full

admiral Admiral is one of the highest ranks in some navies. In the Commonwealth nations and the United States, a "full" admiral is equivalent to a "full" general in the army or the air force, and is above vice admiral and below admiral of the fleet, ...

on 1 April 1930. Ōsumi was a strong proponent of Japan's southward expansion, but refused to align himself with either the

Treaty Faction The was an unofficial and informal political faction within the Imperial Japanese Navy in the 1920s-1930s of officers supporting the Washington Naval Treaty. Background The ''Washington Naval Treaty'', also known as the ''Five-Power Treaty'', l ...

or the

Fleet Faction The was an unofficial and informal political faction within the Imperial Japanese Navy in the 1920s and 1930s of officers opposed to the conditions imposed by the Washington Naval Treaty. Background The Washington Naval Treaty, also known as the ...

within the Navy. He was awarded the

Order of the Sacred Treasures 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 t ...

, 1st class on 14 May 1931.

Political career

Ōsumi served as

Minister of the Navy Minister of the Navy may refer to: * Minister of the Navy (France) * Minister of the Navy (Italy) The Italian Minister of the Navy ( it, Ministri della Marina del Regno) was a member in the Council Ministers until 1947, when the ministry merged ...

from December 1931-May 1932, under the short-lived second cabinet of

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 ...

Wakatsuki Reijirō Baron was a Japanese politician and Prime Minister of Japan. Early life Wakatsuki Reijirō was born on 21 March 1866, in Matsue, Izumo Province (present day Shimane Prefecture), the second son of samurai foot soldier (''ashigaru'') Okumura Se ...

. His second term as

was from January 1933-March 1936, during the cabinets of Prime Minister

Saitō Makoto Viscount was a Japanese naval officer and politician. Nussbaum, Louis-Frédéric. (2005)"Saitō Makoto"in ''Japan Encyclopedia'', p. 809. Upon distinguishing himself during his command of two cruisers in the First Sino-Japanese War, Saitō rose ...

and

Keisuke Okada was an admiral in the Imperial Japanese Navy, politician and Prime Minister of Japan from 1934 to 1936. Biography Early life Okada was born on 20 January 1868, in Fukui Prefecture, the son of a samurai of the Fukui Domain. He attended the 15th ...

. Ōsumi, despite his reputation as a liberal, supported the decision to withdraw from the

League of Nations The League of Nations (french: link=no, Société des Nations ) was the first worldwide intergovernmental organisation whose principal mission was to maintain world peace. It was founded on 10 January 1920 by the Paris Peace Conference that ...

and also argued forcefully for higher naval appropriations budget and re-negotiation of the

Washington Naval Treaty The Washington Naval Treaty, also known as the Five-Power Treaty, was a treaty signed during 1922 among the major Allies of World War I, which agreed to prevent an arms race by limiting naval construction. It was negotiated at the Washington Nav ...

. In a "guns and butter" debate, Ōsumi told Japanese legislators that it was incumbent to expand Japan's navy, and that "the whole Japanese nation must make up its mind to cope with the situation, even if we are reduced to eating rice gruel.". On 7 February 1934, he was awarded the

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 ...

, 1st class. On 26 December 1935, he 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. During the attempted coup by a faction of 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 ...

in February 1936 (the February 26 incident, Ōsumi's actions were remarkably ambiguous. Although the commander of the

Combined Fleet The was the main sea-going component of the Imperial Japanese Navy. Until 1933, the Combined Fleet was not a permanent organization, but a temporary force formed for the duration of a conflict or major naval maneuvers from various units norm ...

, Admiral

Sankichi Takahashi was an Admiral of the Imperial Japanese Navy. After the Washington Naval Treaty of 1922 Takahashi, an important figure of the IJN's Fleet Faction, made a swift career, from commander of an obsolete cruiser in 1923 to commander of the Combined Fle ...

ordered his battleships in

Tokyo Bay is a bay located in the southern Kantō region of Japan, and spans the coasts of Tokyo, Kanagawa Prefecture, and Chiba Prefecture. Tokyo Bay is connected to the Pacific Ocean by the Uraga Channel. The Tokyo Bay region is both the most populous a ...

and targeted the rebel positions, and the commander of the

, Admiral

Shigeyoshi Inoue was an admiral in the Imperial Japanese Navy during World War II. He was commander of the Japanese 4th Fleet and later served as Vice-Minister of the Navy. A noted naval theorist, he was a strong advocate of naval aviation within the Japanese N ...

organized a land force to march on Tokyo, Ōsumi refused to issue any orders or take any action, despite word that Prime Minister

Okada Keisuke was an admiral in the Imperial Japanese Navy, politician and Prime Minister of Japan from 1934 to 1936. Biography Early life Okada was born on 20 January 1868, in Fukui Prefecture, the son of a samurai of the Fukui Domain. He attended the 15th ...

had survived the attack. After the suppression of the coup, Ōsumi resigned as Minister of the Navy, and served as Naval Councilor from 1936 onwards. In 1940, on the retirement of

Prince Fushimi Hiroyasu was a scion of the Japanese imperial family and was a career naval officer who served as chief of staff of the Imperial Japanese Navy from 1932 to 1941. Early life Prince Hiroyasu was born in Tokyo as Prince Narukata, the eldest son of Princ ...

, Ōsumi became the most senior admiral in the Imperial Japanese Navy; however, he was bypassed for promotion by

Osami Nagano was a Marshal Admiral of the Imperial Japanese Navy and one of the leaders of Japan's military during most of the Second World War. In April 1941, he became Chief of the Imperial Japanese Navy General Staff. In this capacity, he served as the n ...

. Ōsumi was killed in action in the

Second Sino-Japanese War The Second Sino-Japanese War (1937–1945) or War of Resistance (Chinese term) was a military conflict that was primarily waged between the Republic of China and the Empire of Japan. The war made up the Chinese theater of the wider Pacific Th ...

during an inspection tour of the front lines on 5 February 1941, when his plane, an

Imperial Japanese Airways was the national airline of the Empire of Japan during World War II. History With the start of the Second Sino-Japanese War, there was a tremendous need for air transport capability by the Japanese military, which had traditionally drawn on th ...

transport, was shot down by Chinese guerrillas soon after takeoff from

Guangzhou Guangzhou (, ; ; or ; ), also known as Canton () and alternatively romanized as Kwongchow or Kwangchow, is the capital and largest city of Guangdong province in southern China. Located on the Pearl River about north-northwest of Hong Kon ...

on a flight towards Japanese-occupied

Hainan Hainan (, ; ) is the smallest and southernmost province of the People's Republic of China (PRC), consisting of various islands in the South China Sea. , the largest and most populous island in China,The island of Taiwan, which is slightly l ...

."End of Osumi"
TIME Magazine, February 17, 1941 He was posthumously awarded the Order of the Rising Sun: Grand Cordon of the Paulownia Flowers. His grave is at the

Aoyama Cemetery is a cemetery in Aoyama, Minato, Tokyo, Japan, managed by the Tokyo Metropolitan Government. The cemetery is also famous for its cherry blossoms, and at the season of hanami, which many people would visit. History The cemetery was origin ...

Tokyo Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, with an estimated 37.468 ...

References

Books

* * *

External links

* * Time Magazine obit from 17 Feb 1941.

Notes

{{DEFAULTSORT:Osumi, Mineo 1876 births 1941 deaths People from Inazawa Imperial Japanese Navy admirals Japanese military personnel of the Russo-Japanese War Japanese admirals of World War II Japanese military personnel killed in World War II Kazoku Ministers of the Imperial Japanese Navy Japanese naval attachés Recipients of the Order of the Golden Kite Recipients of the Order of the Rising Sun with Paulownia Flowers Recipients of the Order of the Sacred Treasure, 1st class