This United States Army manual, Training Circular TC 21-306 Tracked Combat Vehicle Driver Training April 2025, provides unit commanders and unit master drivers with guidance on developing tracked, combat vehicle driver training programs for their organizations. The Central Army Registry and the Unit Training Assistance Program provide units with resources and guidance to support training that promotes safe driving practices, accident avoidance, and technical competence to produce more lethal and effective combat vehicle crews. Hands-on training in a controlled environment and under the close supervision of qualified and licensed trainers is a must in all phases of driver training. The principal audience for TC 21-306 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.