This United States Army manual, Training Circular TC 3-20.31-043 Conduct of Fire October 2024, provides the standardized direct fire engagement process for crews, teams, squads, and small units. It provides principles coordinating the actions of these entities for establishing cohesion through a common, standardized engagement process. The concepts described in TC 3-20.31-043 are applicable to all direct fire weapons, weapon systems, and small units in the Armored brigade combat team, Stryker brigade combat team, and Infantry brigade combat team. The principal audience for TC 3-20.31-043 is all members of the profession of arms. Commanders and staffs of Army headquarters serving as 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.