A brigade support battalion (BSB) is a combat service support battalion of the United States Army. A BSB is an organic part of a brigade combat team (BCT), providing self-sustainment to the BCT for up to 72 hours of high-intensity combat before requiring replenishment. It consists of a headquarters and headquarters company, field maintenance company, distribution company, medical company, and a forward support company assigned to each of the other battalions in the BCT.