What are the two divisions of the enlisted ranks that are based on experience and skill?

The two divisions of enlisted ranks based on experience and skill are the Non-Commissioned Officers (NCOs) and the Junior Enlisted ranks. NCOs, typically holding ranks from Corporal to Sergeant Major, are responsible for leadership, training, and management of junior enlisted personnel. In contrast, Junior Enlisted ranks, including Private through Specialist, focus on developing foundational skills and gaining experience in their respective roles. These divisions help structure the military hierarchy and ensure effective leadership and mentorship throughout the ranks.