Focus on the principles of staff operations, decisionmaking; symbology; and operation plans, orders, and annexes. Lesson S180 introduces US Army doctrine defining the roles and responsibilities of the commanders; assistant and deputy commanders; chiefs of staff; and the coordinating; special, and personal staff groups. Lesson S181 focuses on the military deisionmaking process, a process which is intrinsic to the preparation of staff estimates and the operation plan or order. Lesson S182 introduces symbology commonly used to depict units, positions, and control measures on military maps and overlays. Lesson S183 covers the formats of operation plans, orders, and annexes.