Training Circular TC 3-90.5 is a tool commanders can use during training strategy development. The products in this TC are developed to support the battalion's mission-essential task list (METL) training strategy. This TC provides guidance for commanders, staff, leaders, and Soldiers who plan, prepare, execute, and assess training of the combined arms battalion (CAB). The primary target audience for this TC is the battalion commander, staff, and other leaders within the CAB. The secondary audience consists of training developers who develop training support materials for professional military education (PME). This publication applies to the Active Army, Army National Guard (ARNG)/Army National Guard of the United States (ARNGUS), and the United States Army Reserve (USAR) unless otherwise stated.