 The 1st Sustainment Brigade ( 1SB ) in garrison at Fort Riley is composed of four subordinate battalions . The 1st Special Troops Battalion ( STB ) contains a Headquarters and Headquarters Company ( HHC ) , 267th Signal Company , and the 24th Transportation Company . The 1st STB and the 541st Combat Sustainment Support Battalion are permanently assigned to the 1SB . The 1SB has an Administrative Control Minus ( ADCON- ) Training and Readiness ( TRA ) relationship with the 84th Explosive Ordnance Demolition ( EOD ) Battalion and the 1st Infantry Division Headquarters and Headquarters Battalion ( 1DHHB ) . Thanks to the brigade 's modular design , it is also capable of gaining additional subordinate units upon deployment to a theater of operations . 
