139th Brigade Support Battalion

Company A, 139th Brigade Support Bn.

Company B, 139th Brigade Support Bn.

The 139th Brigade Support Battalion, of Brookings, has a mission to provide logistical and maintenance support to a maneuver enhancement brigade and attached units. The 139th has a Headquarters and Headquarters Detachment, along with two subordinate companies. The 139th BSB and assigned units will be deactivated and divested by the U.S. Army and will no longer be part of the SDARNG force structure after 2021.