Staff officer

Operations

The operations office may include plans and training. The operations office plans and coordinates operations, and all things necessary to enable the formation to operate and accomplish its mission. In most units, the operations office is the largest of the staff sections and considered the most important. All aspects of sustaining the unit's operations, planning future operations, and additionally planning and executing all unit training, fall under the responsibility of operations. The operations office is also tasked with keeping track of the weekly training schedules. In most military units (i.e., battalion, regiment, and brigade), the operations officer carries the same rank as the executive officer (XO), but ranks third in the unit's chain of command while the other staff officers are one rank lower. For example, in a battalion, the S-3 would hold the rank of major (like the battalion XO), while the remaining staff officers are captains or lieutenants.