ATP 4-90 describes the brigade support battalion's roles, characteristics, core competencies, functions, and organization in maneuver brigades, multifunctional support brigades (combat aviation brigade, field artillery brigade), functional support brigades, and multi-domain task forces. This publication is a revision of ATP 4-90 published in 2020 and aligns with FM 3-0 and FM 4-0. The updates to ATP 4-90 include the light support battalion, which provides support to mobile infantry brigades. It provides detailed information on brigade sustainment staff and brigade support battalions to include command and control and sustainment operations at the brigade echelon. This publication also discusses echeloned sustainment and the brigade support area. Supporting organizational graphics are also updated.
DesignationATP 4-90
EditionJan 2026
StatusActive
ProponentT2COM
Pages82
FunctionSustainment
EchelonBattalion
CollectionCurrent Doctrine
Approved for public release; distribution is unlimited. This publication supersedes ATP 4-90, dated 18 June 2020. HEAD