This publication, Field Manual FM 4-0 Sustainment Operations August 2024, supersedes FM 4-0, dated 31 July 2019; FM 4-01, dated 3 April 2014; FM 4-30, dated 1 April 2014; and FM 4-40, dated 22 October 2013. This United States Army manual, Field Manual FM 4-0 Sustainment Operations August 2024, describes how Army sustainment forces, as part of the joint team, provide support to Army and other forces with an emphasis on support to operations. FM 4-0 describes how the Army as part of a joint team is sustained during operations. The principal audience for FM 4-0 is all members of the profession of arms. Commanders and staffs of Army headquarters serving as a joint task force or multinational headquarters should also refer to applicable joint or multinational doctrine concerning the range of military operations and joint or multinational forces. Trainers and educators throughout the Army will also use this publication.