593rd Sustainment Command (Expeditionary) is one of four active duty expeditionary sustainment commands in the U.S. Army. Constituted 77 years ago as the 1350th Engineer Base Depot Brigade in support of World War II, 593rd ESC has since proudly served in over 14 campaigns and earned two Meritorious Unit Commendations and the Vietnamese Cross of Gallantry with Palm. Stationed at Joint Base Lewis-McChord, Wash, the headquarters is assigned to the Pacific Command (PACOM) and is under the operational control of U.S. Army Pacific (USARPAC) and I Corps. However, many of our subordinate units are service retained and are globally available to meet Forces Command (FORSCOM) and the Army's requirements. On any given day, we have many units and Soldiers deployed in support of worldwide missions.
Our command structure consists of approximately 4,500 Soldiers serving within 95 military occupational specialties, who are prepared to deploy worldwide in order to provide mission command, sustainment, military police, and tactical health service support to joint and coalition forces and civil authorities. Additionally, we provide daily support to I Corps and other JBLM tenant units. By design, we are an incredibly flexible, scalable and tailorable organization capable of providing expeditionary mission command for theater opening, reception, staging and onward movement, sustainment and distribution to enable freedom of action in support of Unified Land Operations while maintaining mission command of subordinate units.
As a deployable headquarters, we can work for a variety of commands: as a forward command post of a Theater Sustainment Command, as the sustainment command for an Army Corps, Land Component Commander or for a Joint Task Force Headquarters. In some cases, such as support to Humanitarian Assistance or Disaster Relief operations, we can act as the Joint Task Force (JTF) HQs. At its root, the ESC is a deployable command post. The 593rd ESC's focus is on an assigned area of operations (AO) and sustaining those units deployed in the AO (corps or divisions). The Geographic Combatant Commander (GCC) can adjust the AO and the 593rd ESC is able to adapt to these adjustments by maintaining three deployable command posts and one that is static and remains at home station. The deployable command posts are the Humanitarian Assistance Survey Team (HAST), the Early Entry Command Post (EECP), and the Main Command Post (MCP). The home station command post is the Support Operations Center (SOC).
The 593rd ESC is in a unique position straddling both USARPAC and FORSCOM. This provides the command tremendous opportunities to remain trained and ready as an expeditionary command headquarters that is regionally engaged and globally responsive, capable of deploying to any environment.