Altteureu Airfield (), also known as Cheju-do No. 2 (K-40) Air Base, was a former

Imperial Japanese Navy Air Service The (IJNAS) was the air arm of the Imperial Japanese Navy (IJN). The organization was responsible for the operation of naval aircraft and the conduct of aerial warfare in the Pacific War. The Japanese military acquired its first aircraft in ...

and

United States Air Force The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...

(USAF)

air base An airbase (stylised air base in American English), sometimes referred to as a military airbase, military airfield, military airport, air station, naval air station, air force station, or air force base, is an aerodrome or airport used as a mi ...

on southern

Jeju Island Jeju Island (Jeju language, Jeju/) is South Korea's largest island, covering an area of , which is 1.83% of the total area of the country. Alongside outlying islands, it is part of Jeju Province and makes up the majority of the province. The i ...

, South Korea. It was mostly returned to farm land from the late 1960s onwards, though the site is still owned and used to some extent by the

Republic of Korea Air Force The Republic of Korea Air Force (ROKAF; ), also known as the ROK Air Force or South Korean Air Force, is the Air force, aerial and Space force, space warfare service branch of South Korea, operating under the Ministry of National Defense (South K ...

, in particular a grass airstrip known semi-officially as ''Alddreu Airport''.

History

Gamaoreum underground Japanese Millitary base at WWII

The airfield, then known as ''Altehru Airfield'', was originally developed between 1926 and 1930 during the Japanese Imperial period. The local population were used as forced labour to flatten and clear the landscape, and later to build underground tunnels. Initially, it was primarily used as a refueling station, as well as a base for

reconnaissance In military operations, military reconnaissance () or scouting is the exploration of an area by military forces to obtain information about enemy forces, the terrain, and civil activities in the area of operations. In military jargon, reconnai ...

and

maritime patrol Maritime patrol or maritime reconnaissance is the task of monitoring areas of water. Generally conducted by military and law enforcement agencies, maritime patrol is usually aimed at identifying human activities. Maritime patrol refers to active ...

aircraft. During the

Second Sino-Japanese War The Second Sino-Japanese War was fought between the Republic of China (1912–1949), Republic of China and the Empire of Japan between 1937 and 1945, following a period of war localized to Manchuria that started in 1931. It is considered part ...

it was also used as a forward base of the Omura Naval Air Group for the bombing of cities in China such as Shanghai and Nanjing.

World War II

Among other things, the base was used for the training of ''

kamikaze , officially , were a part of the Japanese Special Attack Units of military aviators who flew suicide attacks for the Empire of Japan against Allied naval vessels in the closing stages of the Pacific campaign of World War II, intending to d ...

'' pilots and by the end of the war it housed 2500 naval aviation troops and 25 aircraft in hardened aircraft shelters. Nearing the end 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 ...

the Japanese were facing an inevitable defeat. Fearing a fight on Japanese soil, they planned on using Jeju's Alddreu Airfield as a last resort to defend against the Allied forces.

Korean War

The USAF designated the base as Cheju-do No.2 or K-40. It was apparently mainly used as a refueling & communications facility and came under the umbrella of the ''100th Air Base Wing'' from 5 August 1951. Along with an airfield security

company A company, abbreviated as co., is a Legal personality, legal entity representing an association of legal people, whether Natural person, natural, Juridical person, juridical or a mixture of both, with a specific objective. Company members ...

of the USAF's

Air Police The United States Air Force Security Forces (SF) are the ground combat force and military police service of the U.S. Air Force and U.S. Space Force. The USAF Security Forces were formerly known as Military Police (MP), Air Police (AP), and ...

, there were communications, civil engineering, and food service companies permanently based at K-40 during this period.

Postwar

Aldreu Japanese underground hangar at WWII

TACAN A tactical air navigation system, commonly referred to by the acronym TACAN, is a navigation system initially designed for naval aircraft to acquire moving landing platforms (i.e., ships) and later expanded for use by other military aircraft. It p ...

facility was built on the base, now known as ''Altteureu Airfield'', during the early 1960s. Alddreu was handed over by the USAF to the ROKAF in the later part of that decade. The base continues to be owned by the Korean Air Force but has been largely leased to civilians since the time of the handover, with most of the site being currently used as

potato The potato () is a starchy tuberous vegetable native to the Americas that is consumed as a staple food in many parts of the world. Potatoes are underground stem tubers of the plant ''Solanum tuberosum'', a perennial in the nightshade famil ...

fields, though a large number of pre- and post-war facilities are still intact to one degree or another. These include 19 (out of an original 20) World War II aircraft bunkers, and a 1,400-meter grass runway which is still in use as a

reserve Reserve or reserves may refer to: Places * Reserve, Kansas, a US city * Reserve, Louisiana, a census-designated place in St. John the Baptist Parish * Reserve, Montana, a census-designated place in Sheridan County * Reserve, New Mexico, a US v ...

airstrip An aerodrome, airfield, or airstrip is a location from which aircraft flight operations take place, regardless of whether they involve air cargo, passengers, or neither, and regardless of whether it is for public or private use. Aerodromes in ...

by the ROKAF. Seogwipo City planned at one stage during the late 2000s to develop the area as a theme park.

References

External links

S. Korean island still holds Japan’s final fortifications to oppose U.S. invasion
- ''

The Asahi Shimbun is a Japanese daily newspaper founded in 1879. It is one of the oldest newspapers in Japan and Asia, and is considered a newspaper of record for Japan. The ''Asahi Shimbun'' is one of the five largest newspapers in Japan along with the ''Yom ...