What unit is the lowest level to have a METL?

The correct answer is Company, as the company-level unit is where the Mission Essential Task List (METL) is first developed and documented in a structured format. The METL provides a framework for identifying the essential tasks that a unit must be capable of performing to achieve its mission. While lower units like platoons or troops may focus on individual tasks, they do not have a formal METL of their own, as their tasks are typically derived from the higher-level unit's METL. Brigades, being a higher echelon, encapsulate the METLs of subordinate units such as companies but do not represent the lowest level where a METL is documented. The development of a company METL allows for a cohesive training strategy, integrating various tasks to ensure readiness for the unit's missions.