The 645th Regional Support Group is a subordinate unit of the 103rd Expeditionary Sustainment Command. As of January 2026 the group consists of the following units:[1]
645th Regional Support Group, in Southfield (MI)[1][2][3][4]
- Headquarters and Headquarters Company, 645th Regional Support Group, in Southfield (MI)[4]
- 406th Combat Sustainment Support Battalion, in Ann Arbor (MI)[4]
- Headquarters and Headquarters Company, 406th Combat Sustainment Support Battalion, in Ann Arbor (MI)[4]
- 13th Quartermaster Detachment (Petroleum Liaison Team), in Livonia (MI)[4]
- 180th Transportation Medium Truck Company (Cargo) (EAB Linehaul), in Muskegon (MI)[4]
- Detachment 1, 180th Transportation Medium Truck Company (Cargo) (EAB Linehaul), in Bay City (MI)[4]
- 182nd Transportation Medium Truck Company (POL, 7.5K GAL) (EAB Linehaul), in Traverse City (MI)[4]
- Detachment 1, 182nd Transportation Medium Truck Company (POL, 7.5K GAL) (EAB Linehaul), in Bay City (MI)[4]
- 301st Quartermaster Company (Water Purification and Distribution), in Grand Rapids (MI)[4]
- 1st Platoon, 301st Quartermaster Company (Water Purification and Distribution), in Augusta (MI)[4]
- 401st Transportation Medium Truck Company (PLS) (EAB Tactical), in Augusta (MI)[4]
- 431st Quartermaster Company (Petroleum Pipeline and Terminal Operation), in Augusta (MI)[4]
- 858th Transportation Detachment (Movement Control Team), in Bay City (MI)[4]
- 919th Transportation Company (Inland Cargo Transfer Company — ICTC), in Saginaw (MI)[4]
- 952nd Quartermaster Company (Petroleum Pipeline and Terminal Operation), in Livonia (MI)[4]
Abbreviations: PLS — Palletized Load System; POL — Petroleum Oil Lubricants; EAB — Echelon Above Brigade
United States