was a

vice admiral Vice admiral is a senior naval flag officer rank, usually equivalent to lieutenant general and air marshal. A vice admiral is typically senior to a rear admiral and junior to an admiral. Australia In the Royal Australian Navy, the rank of Vice ...

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, Potsdam Declaration, when it was dissolved followin ...

during

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

Biography

Early career

Yamada was born in

Fukuoka prefecture is a Prefectures of Japan, prefecture of Japan located on the island of Kyūshū. Fukuoka Prefecture has a population of 5,109,323 (1 June 2019) and has a geographic area of 4,986 Square kilometre, km2 (1,925 sq mi). Fukuoka Prefecture borders ...

as the eldest son of Yamada Sadanao, a colonel in the

Imperial Japanese Army The Imperial Japanese Army (IJA; , ''Dai-Nippon Teikoku Rikugun'', "Army of the Greater Japanese Empire") was the principal ground force of the Empire of Japan from 1871 to 1945. It played a central role in Japan’s rapid modernization during th ...

, and was raised in Matsue, Shimane. He graduated from the 42nd class of the Imperial Japanese Naval Academy in 1914, ranked 5th out of 117 cadets. As a

midshipman A midshipman is an officer of the lowest Military rank#Subordinate/student officer, rank in the Royal Navy, United States Navy, and many Commonwealth of Nations, Commonwealth navies. Commonwealth countries which use the rank include Royal Cana ...

, he was assigned to the

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 operational roles from search-and-destroy to ocean escort to sea ...

s and , and on his commissioning as

ensign Ensign most often refers to: * Ensign (flag), a flag flown on a vessel to indicate nationality * Ensign (rank), a navy (and former army) officer rank Ensign or The Ensign may also refer to: Places * Ensign, Alberta, Alberta, Canada * Ensign, Ka ...

was assigned to the

battleship A battleship is a large, heavily naval armour, armored warship with a main battery consisting of large naval gun, guns, designed to serve as a capital ship. From their advent in the late 1880s, battleships were among the largest and most form ...

s and . In May 1918, he attended the Naval Artillery School; however in December 1918 he transferred to the fledgling

naval aviation Naval aviation / Aeronaval is the application of Military aviation, military air power by Navy, navies, whether from warships that embark aircraft, or land bases. It often involves ''navalised aircraft'', specifically designed for naval use. Seab ...

section. He was assigned to a fighter squadron in Yokosuka Naval Air Group from December 1919, where he rose to become a flight commander. As a lieutenant, Yamada was posted as naval attaché to France from August 1920 to December 1923, and was a member of the Japanese delegation at the Versailles Peace Treaty negotiations and while in France was promoted to captain. On his return to Japan, he was assigned as squadron commander at Yokosuka from June 1924 and as an instructor at the Kasumigaura Air Group from December 1925. He was promoted to lieutenant commander in 1925, and then to

commander Commander (commonly abbreviated as Cmdr.) is a common naval officer rank as well as a job title in many army, armies. Commander is also used as a rank or title in other formal organizations, including several police forces. In several countri ...

after graduation from the Naval Staff College in December 1928. As commander, Yamada served as chief-of-staff of Section 1 (Operations) and Section 2 (Weapons) within the

Imperial Japanese Navy General Staff The was the highest organ within the Imperial Japanese Navy (IJN). In charge of planning and operations, it was headed by an Admiral headquartered in Tokyo. History Created in 1893, the Navy General Staff took over operational (as opposed to a ...

from December 1930, and Section 3 (Intelligence) from May 1931. He was again sent as naval attaché to France from June 1935 to March 1938, during which he participated in the Geneva Disarmament Conference. He was also promoted to captain while in France in 1935. After his return to Japan, he was subjected to an extensive debriefing by the General Staff and was then assigned to the staff 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 Ocean, Pacific coasts of central and northern Honshū from the Kii Peninsula to Shimokita Peninsula. Its h ...

from May 1939. In October 1939, Yamada assumed command of the

aircraft carrier An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and hangar facilities for supporting, arming, deploying and recovering carrier-based aircraft, shipborne aircraft. Typically it is the ...

and October 1940 was reassigned to the . He was promoted to

rear admiral Rear admiral is a flag officer rank used by English-speaking navies. In most European navies, the equivalent rank is called counter admiral. Rear admiral is usually immediately senior to commodore and immediately below vice admiral. It is ...

on 15 October 1941.

World War II

After the start of the

Pacific War The Pacific War, sometimes called the Asia–Pacific War or the Pacific Theatre, was the Theater (warfare), theatre of World War II fought between the Empire of Japan and the Allies of World War II, Allies in East Asia, East and Southeast As ...

, Yamada was assigned command of the 25th Air Flotilla (also called the "5th Air Attack Force") at the Japanese base of

Rabaul Rabaul () is a township in the East New Britain province of Papua New Guinea, on the island of New Britain. It lies about to the east of the island of New Guinea. Rabaul was the provincial capital and most important settlement in the province ...

New Britain New Britain () is the largest island in the Bismarck Archipelago, part of the Islands Region of Papua New Guinea. It is separated from New Guinea by a northwest corner of the Solomon Sea (or with an island hop of Umboi Island, Umboi the Dampie ...

from April 1942. This aircraft wing consisted of land-based bombers, fighters, and reconnaissance aircraft, and reported to the

11th Air Fleet The was a grouping of naval aviation and surface units. Assignments and Components Commanders Chiefs of Staff Notes References * {{Use dmy dates, date=June 2017 Fleets of the Imperial Japanese Navy Units of the Imperial Japanese N ...

. Its role was to support Japanese military operations in the

New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; , fossilized , also known as Papua or historically ) is the List of islands by area, world's second-largest island, with an area of . Located in Melanesia in the southwestern Pacific Ocean, the island is ...

and

Solomon Islands Solomon Islands, also known simply as the Solomons,John Prados, ''Islands of Destiny'', Dutton Caliber, 2012, p,20 and passim is an island country consisting of six major islands and over 1000 smaller islands in Melanesia, part of Oceania, t ...

Campaigns, including

Operation Mo or the Port Moresby Operation was a Japanese plan to take control of the Australian Territory of New Guinea during World War II as well as other locations in the South Pacific. The goal was to isolate Australia and New Zealand from the Allie ...

, the attempted invasion of

Port Moresby (; Tok Pisin: ''Pot Mosbi''), also referred to as Pom City or simply Moresby, is the capital and largest city of Papua New Guinea. It is one of the largest cities in the southwestern Pacific (along with Jayapura) outside of Australia and New ...

in May, 1942. Yamada was transferred from November 1942 to December 1943 to serve as

Chief of Staff The title chief of staff (or head of staff) identifies the leader of a complex organization such as the armed forces, institution, or body of persons and it also may identify a principal staff officer (PSO), who is the coordinator of the supportin ...

for the 3rd Fleet. From December 1943 to March 1944, he commanded the Yokosuka Air Group. He was promoted to

on 15 October 1944. He commanded the 101st Squadron from November 1944 to August 1945, and the 3rd Air Fleet from 26 August to 15 October 1945.''Naval History via Flix'' He died in 1971.

References

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Notes

External links

* * {{DEFAULTSORT:Yamada, Sadayoshi 1892 births 1972 deaths Military personnel from Fukuoka Prefecture Japanese admirals of World War II Imperial Japanese Navy admirals Japanese military attachés Japanese naval aviators Imperial Japanese Navy Air Service