A Non-Commissioned Officer (NCO) is a military leader who has not received a commission as an officer. Instead, they rise through the ranks based on their experience and skills. NCOs play a crucial role in training and guiding enlisted personnel, ensuring that tasks are completed effectively. They often serve as a bridge between the enlisted soldiers and commissioned officers, helping to communicate orders and maintain discipline. NCOs are essential in various branches of the military, including the Army, Navy, and Air Force. They hold positions such as sergeant or corporal and are responsible for the welfare and performance of their troops. Their leadership helps maintain order and efficiency within the military structure.