Eighth US Army
Definition/Scope: Eighth United States Army (EUSA) supports deterrence of North Korea aggression against the Republic of Korea (ROK). Should deterrence fail, EUSA supports NEO, transitions to hostilities, generates combat power to support CINC UNC/CFC ’s campaign, and provides combat support and combat service support to assigned, attached, and other designated forces within the Korea Theater of Operation and on order, conducts combat operations. EUSA was officially activated in the continental United States on June 10, 1944, and ordered to the Pacific where, under the command of LG Robert L. Eichelberger, it earned the sobriquet of "Amphibious Eighth" while making more than 60 "island-hopping" assaults. EUSA also assisted in the liberation of the Philippines and on July 1, 1945, assumed control of the archipelago, bringing enemy resistance to an end. Eighth Army was being readied for the main assault on the Kanto Plain (Tokyo) of the Japanese main island, when V-J Day changed its mission. Along with the Sixth Army, EUSA provided the ground forces for General of the Army Douglas MacArthur’s occupation of Japan. Occupational forces landed peacefully on August 30. First the northern portion and, after January 1, 1946, all of Japan came under EUSA’s jurisdiction. Part of Eighth Army’s post-war duties included disarming Japanese military forces; destroying the nation’s war making potential; conducting the trial of war criminals; guiding the defeated nation into peaceful pursuits and the democratic way of life; encouraging economic rehabilitation, local autonomy, and education and land reform; guarding installations; protecting supply routes and watching over government operations.
Broader Terms:Army Service Component Command
Narrower Terms:18th Medical Command
Related Terms:19th Theater Support Command