Training Circular TC 3-90.6 is a tool that commanders can use during training strategy development. The products in this TC are developed to support the brigade's full spectrum operations mission-essential task list training strategy. This training circular provides doctrinal guidance for commanders, staff, leaders, and Soldiers who plan, prepare, execute, and assess training of the brigade combat team. The primary target audience for this training circular is the Heavy, Infantry, and Stryker brigade combat team commander, staff, and other leaders. The secondary audience is training developers who develop training support materials for professional military education. This publication applies to the Active Army, the Army National Guard (ARNG)/Army National Guard of the United States (ARNGUS), and the United States Army Reserve (USAR) unless otherwise stated. Brigade combat teams (BCTs) conduct offensive, defensive, stability, and civil support operations. Their core mission is to close with the enemy by means of fire and maneuver, to destroy or capture enemy forces, or to repel enemy attacks by fire, close combat, and counterattack. The BCT can fight without augmentation, but it also can be tailored to meet the precise needs of its missions. Brigade combat teams conduct expeditionary deployment and integrate the efforts of the Army with military and civilian, joint, and multinational partners (Field Manual [FM] 3-90.6). To accomplish this and more, BCT commanders must train their units to standard. This training circular (TC) provides information on the Army approach to training and highlights several training considerations and enablers and, when implemented and used, can make training successful.