Command levels, also known as ECHELONS, refer to the hierarchical structure of an organization. They are used to define the roles and responsibilities of each level within the organization. The higher the command level, the more authority and responsibility that individual has. Command levels are typically divided into three categories: strategic, operational, and tactical. Strategic command levels are responsible for setting the overall goals and objectives of the organization, while operational command levels are responsible for carrying out the day-to-day operations. Tactical command levels are responsible for executing specific tasks and activities.