| Sixth Army | |
|---|---|
| Active | 1924-1933 1943–1995 2008–present |
| Country | |
| Allegiance | United States of America |
| Branch | |
| Type | Theater Army |
| Role | Component command |
| Garrison/HQ | Fort Sam Houston, Texas |
| Nickname | "Alamo Force" |
| Motto | Born of War |
| Engagements | World War II |
| Decorations | Meritorious Unit Commendation Superior Unit Award[1] Philippine Republic Presidential Unit Citation |
| Website | arsouth.army.mil |
| Commanders | |
| Notable commanders | Walter Krueger Joseph Stilwell Albert C. Wedemeyer Robert M. Cannon David E. Grange Jr. William Hardin Harrison |
| Insignia | |
| Flag | |
| Distinctive unit insignia | |
| Sixth Army's Shoulder Sleeve Insignia 1927-1945 Saw limited use in WW2 | |
| Sixth Army's Shoulder Sleeve Insignia during WW2 until the 1950s | |
| NATO Map Symbol | |
Sixth Army is atheater army of the United States Army. The Army service component command ofUnited States Southern Command, itsarea of responsibility includes 31 countries and 15 areas of special sovereignty in Central and South America and the Caribbean. It is headquartered atFort Sam Houston.
The Sixth Army saw extensive service in the South Pacific during World War II, including inNew Britain,New Guinea, and thePhilippines. Postwar it served stateside training army forces until its inactivation during force reduction in 1995. The army was reactivated in 2007.
The first iteration of the Sixth Army was authorized by theNational Defense Act of 1920 and was originally to be composed ofOrganized Reserve units primarily from the Seventh, Eighth, and NinthCorps Areas. The Sixth Army Headquarters and Headquarters Company were constituted in the Organized Reserve on 15 October 1921 and allotted to the Seventh Corps Area.Little Rock,Arkansas, was designated as the army headquarters upon organization, but the unit was never organized at that location. The Headquarters Company was initiated 13 October 1922 at Little Rock. Little Rock remained the Sixth Army’s headquarters location upon the event of its activation until 25 February 1924, whenSt. Louis,Missouri, was designated as the army’s new headquarters location. The headquarters was initiated in August 1924 at St. Louis. The Headquarters Company was inactivated at Little Rock on 1 October 1924 and relocated to St. Louis. Due to the abandonment of the “Six Army” plan in favor of the “Four Army” plan, the Sixth Army was deleted from the mobilization plans on 1 October 1933 and demobilized (disbanded). Its subordinate units were reassigned to the Fourth Army, the General Headquarters Reserve, or demobilized.[2]
The Sixth United States Army was activated in January 1943, commanded by Lieutenant GeneralWalter Krueger.[3] Under the code nameAlamo Force,[4] it assumed control of the majority ofUS Army units involved inOperation Cartwheel, the campaign to isolate and neutralize the Japanese base atRabaul inNew Britain. Following the completion of Cartwheel, Sixth Army joined theAustralian Army and other US forces on the north coast ofNew Guinea.[5] Similar in conception to the island hopping operations of the central Pacific, the object of the attacks was to land, establish a garrison and airfield which could support the next strike, and then move on.
In September 1944, Sixth Army was relieved from operations in New Guinea by theEighth Army. On 20 October 1944,X Corps andXXIV Corps, under Sixth Army, invadedLeyte in thePhilippines. By December, Leyte was secured, and the Sixth Army was relieved again by Eighth Army to prepare for the invasion ofLuzon.[6] As a prelude to that invasion, the island ofMindoro was invaded by theWestern Visayan Task Force comprising the19th and503rd Regimental Combat Teams.[7] Sixth Army took part in theInvasion of Lingayen Gulf[8] on 9 January 1945 with the subordinate units ofI andXIV Corps.[9] Sixth Army units fought south until they met up those of Eighth Army advancing from aroundManila. Sixth Army then continued to clear the north of Luzon and confronted theShimbu Group in theSierra Madres until the end of the war. Sixth Army was to have provided the ground forces for the first phase of theinvasion of Japan,[10] though afterJapan's early surrender Sixth Army was reassigned tooccupation duty in Japan.[11] Sixth Army returned to the United States in 1946, and was headquartered at thePresidio of San Francisco.
| US Field Armies 1919-present | ||||
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After the war, Sixth Army took responsibility for training of Army forces from part of the continental United States. It was eventually inactivated in June 1995 due to force reductions.[12]
In 2007 it was decided thatUS Army South would be redesignated as US Army South (Sixth Army) under theArmy modularization program.[13][14] It is garrisoned at theOld Brooke Army Medical Center building atFort Sam Houston.[15]
Organization of the army after reformation is as follows:[16]
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