321st Sustainment Brigade ( United States ) The 321st Sustainment Brigade is a sustainment brigade of the United States Army Reserve . History . The 321st Materiel Management Center ( MMC ) ( Theater Support ) was activated as the Headquarters and Headquarters Company , 321st Logistical Command Fort Wayne , Indiana , on 27 February 1951 , and inactivated on 31 December 1955 . In October 1981 , the unit was reactivated as the 321st Materiel Management Center ( Provisional ) . The unit was assembled from Detachment 1 , 4013th U . S . Army Garrison in Baton Rouge , Louisiana . , and 458th Stock Control Company in El Dorado , Arkansas . The 321st MMC became a permanent unit in the Army Reserve on 16 April 1982 , under the command of the 377th Theater Army Area Command ( TAACOM ) in New Orleans , Louisiana . On 20 September 1990 , the 321st MMC was mobilized at Fort Polk , Louisiana , during Operation Desert Shield , and arrived in Dhahran , Saudi Arabia on 9 October 1990 . Initially , the MMC was assigned the task of logistical management for Third Army ( ARCENT ) . As the theater matured , the MMC managed the prodigious logistics effort necessitated by the flow of massive forces , which enabled the Army to decisively defeat the enemy in 100 hours . The 321st MMC ’ s outstanding accomplishments resulted in the unit being awarded the Meritorious Unit Commendation . Operation Desert Calm saw the MMC involved in facilitating the deployment of all U . S . Army units back to Europe and the United States . The unit also supported Operation Provide Comfort aimed at helping the isolated Kurdish resistance in Iraq . The 321st MMC received three campaign credits in Southwest Asia during these operations . They are " The Defense of Saudi Arabia " , " The Liberation and Defense of Kuwait " and the " Cease Fire " . The 321st MMC continued its logistical support to the Southwest Asia Theater and deployed Land forces under 3rd Army . A permanent Forward Detachment of the 321st MMC was domiciled at Camp Doha , Kuwait from 1992 to the present . In October 2000 , the 321st MMC was officially reorganized as a Theater Support Command MMC and multi - component unit of the U . S . Army . On 12 October 2001 detachments of the 321st TMMC were mobilized in support of Operation Enduring Freedom in response to the tragic 11 September 2001 attacks on the United States . These elements provided the necessary additional capability to the 321st for support of the Coalition Force Land Component Command ( CFLCC ) operations in Afghanistan and the Horn of Africa . Additional personnel were deployed to Baton Rouge , La . , and Camp Doha , Kuwait during these operations . In August , September and October 2002 additional personnel were mobilized to continue and expand support for Operation Enduring Freedom , as the 321st TMMC operated as the single Corps Theater Automation Support Center ( CTASC ) in the CENTCOM AOR . On 2 January 2003 the remainder of the 321st TMMC was mobilized to Fort Polk , Louisiana . By 27 January 2003 the 321st had deployed 200 personnel to Kuwait to support Operation Iraqi Freedom . The 321st TMMC was given the mission as the Theater Support Command MMC and the Theater Army MMC during the buildup and execution of Operation Iraqi Freedom . This operation saw the Army provide support over the longest land lines of communication in Army History . The operation was successful resulting in the overthrow of the Iraqi government . The 321st TMMC began a phased demobilization on 15 July 2003 still maintaining a continual mission presence at Baton Rouge , Camp Doha and Camp Arifjan , Kuwait . On 26 January 2004 , Third Army designated the 321st CTASC as the single CTASC for the entire Southwest Asia Theater , processing more transactions in one day that any other CTASC processes in a month . This CTASC mission expansion , as well as the expansion of operations in Arifjan in April 2004 in response to the current insurgency in Iraq , caused the MMC to once again mobilize additional soldiers comparable to its full scale mobilization in 2003 . Today the MMC simultaneously administers to both a fully staffed Reserve Component organization and a split - based mission - support organization staffed predominantly through large numbers of dedicated soldiers cross - leveled from throughout the Army Reserve . In October 2003 the 321st began a unique affiliation with the 304th CMMC from Los Angeles , California , to provide a large number of soldiers still serving today . The 321st TMMC permanent mission continues to change with the evolution of today ’ s Army . The unit is presently in the process of transforming its Reserve Component element from that of a Materiel Management Center to that of a Sustainment Brigade Headquarters . It is the only unit in today ’ s Army endeavoring to accomplish that Transformation while simultaneously performing a wartime mission .