text: Organization
  Figure 1-1. Infantry brigade combat team
  1-7. The Infantry battalions organize with a headquarters and headquarters company, three Infantry rifle
  companies, and a weapons company (see figure 1-2 on page 1-4). The headquarters and headquarters
  company provides planning and intelligence, signal, and fire support to the battalion. The headquarters
  company has a battalion command section, a battalion staff section, a company headquarters, battalion
  medical,scout,and mortar platoons, a signal section,and a sniper squad. The headquarters company mortar
  platoon is equipped with 120-mm mortars (trailer towed) and 81-mm mortars (ground mounted). The
  battalion receives a forward support company(FSC)for sustainment purposes(see chapter 9),normally in a
  direct support relationship. (SeeATP 3-21.20 for additional information.)