Training Circular (TC) 3-21.12 is a tool that a commander can use as an aid during training strategy development. The products in this TC are developed to support the company'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 weapons and antiarmor company. The primary target audience for this TC is the company commander, and other leaders within a weapons and antiarmor company. 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.