U.S. Army Reserve



The 377th Theater Sustainment Command is the Army Reserve’s largest operational command with more than 35,000 Soldiers and 764 Civilians, overseeing more than 405 units across 35 states. In addition to its command role, the 377th TSC is aligned with U.S. Southern Command, which oversees U.S. military interests in Latin America and the Caribbean.

The 377th TSC’s wartime mission is to deploy as part of a U.S.force and conduct combat service support operations for U.S. and allied forces. One of only six TSCs in the Army, it serves as a Force Support Package unit with an ongoing support mission within its area of operation.

More than 500 down-trace units throughout the U.S., Puerto Rico, Guam, and the U.S. Virgin Islands provide support to the TSC for training and wartime mission guidance.

The TSC prepares units for their wartime mission by developing, executing, and evaluating training, and it provides daily logistics support to its wartime higher headquarters for missions and exercises. The command’s lineage dates back to November 1948 when it activated as the 377th Transportation Major Port in New Orleans, Louisiana.

Over the next 50 years, it relocated its headquarters several times and changed its name to reflect an evolving mission in support of a changing Army. By Oct. 1, 1998, the unit’s wartime mission expanded and its designation changed to the 377thTheater Support Command.

In 2010, the 377th deployed to support Operation Unified Response, the humanitarian mission in Haiti following a devastating 7.0 magnitude earthquake, where it controlled all logistics operations and earned the Army Superior Unit Award.

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377th Theater Sustainment Command Leaders

Major General Steven W. Ainsworth
Commanding General

Command Sergeant Major Richard R. Anderson
Command Sergeant Major

• Logistical support to include maintenance, parachute rigging, and laundry/bath
• All logistical supply to include, ammunition, bulk water and petroleum management
• Logistics delivery to include Over the Shore, land transportation delivery and management
• Logistic mission command for all levels within a theater of operation

In The News
June 15, 2018 - The U.S. Army Reserve Best Warrior urban assault course not only challenged competitors physically and mentally, but it also served as a morale booster during the 2018 Best Warrior Competition at Fort Bragg, North Carolina.
June 7, 2018 - The 649th Regional Support Group is one of a few military organizations assigned to be a Mission Support Force. MSFs have a unique and critical role in the current national defense strategy – Focused Ready Units, also known as Ready Force X.
May 29, 2018 - When the 787th Combat Sustainment Support Battalion (CSSB) took command of their mission on May 5 at Camp Taji, one of the first things they did as a unit was to look for ways to make improvements to their work areas, including their new headquarters building.
May 21, 2018 - The United States Army’s number one priority remains readiness. A command’s readiness metrics are the measure of performance and measure of effectiveness in providing trained Soldiers. To focus efforts, the commander of the Army Reserve Sustainment Command called his senior leaders together for a Mission Training Brief.
May 16, 2018 - Four Soldiers from Mission Support Element, 143d Sustainment Command (Expeditionary), joined thousands of service members, veterans and their families who gathered at the Westgate Resort in Kissimmee for free food, live music and heartfelt fellowship during the second annual Military Appreciation Weekend Concert held May 5, 2018.

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