👉 Colonel is a rank in the United States Air Force and other military organizations. It is the highest rank of officer in the US Army, Marine Corps, Navy, and Coast Guard. The rank of Colonel is equivalent to an admiral or vice admiral in the United Kingdom. The term "colonel" is commonly used within the military context to denote a significant position of authority, responsibility, or leadership. It's often used as part of the title for a person holding that rank, and