Free to All Visitors But Our Members and Sponsors Keep Us Online. US I Corps 13 September 1950-End of war US 1st Cavalry Division 13 September 1950-January 1951 April 1951-December 1951; US 2nd Infantry Division 23 July 1950-End of war; US 3rd Infantry Division January 1951- ; -11 July 1952; … Forward-deployed and combat ready, Eighth Army serves as a disciplined and lethal partner of the Combined, Joint Force securing the Republic of Korea. Eighth Army, USAG Humphreys (Until July 2017, USAG Yongsan) The 8th Mechanized Infantry Division is a military formation of the Republic of Korea Army (ROKA). The Members and Sponsors of the Korean War Project. This is the U.S. Eighth Army Korean War order of battle. Just last year Eighth Army and the Third ROK Army established the first ever ROK-U.S. HQ, Eighth Army, OSJA ATTN: (Section or Individual) Unit 15236 APO AP 96271-5236; Foreign Postal Service: Eighth Army OSJA Client Legal Services Building P6400, Room R301 USAG Camp Humphreys Pyeongtaek, Korea 17709 Combined Division. Korean War Project - P.O. Forward-deployed and combat ready, Eighth Army serves as a disciplined and lethal partner of the Combined, Joint Force securing the Republic of Korea. Box 180190 - Dallas - Texas 75218-0190 - 214-320-0342 This Page Made Possible By. US Eighth Army. The Training Support Activity Korea headquarters is located on Camp Coiner and TSAK is under Eighth Army G-37 Training Readiness Exercise Division. By October 1, 1950, Eighth Army reached the 38th parallel and on October 9, it began its main advance across this border – spearheaded by the 1st Cavalry Division and the 1st ROK Division.