what is a ranger in the army rank
United States Army Rangers The United States Army Rangers are an elite rapid-deployment military formation of the United States Army, that serve in designated U.S. Army Ranger units or are graduates from the U.S. Army Ranger School.[1] The term ranger has been in use unofficially in a military context since the early 17th century. The first military company officially commissioned as rangers were English soldiers fighting in King Philip's War (1676) and from there the term came into common official use in the French and Indian Wars. There have been American military companies officially called Rangers since the American Revolution.
Military rank "The [U.S.] commissioned officer corps is divided into 10 pay grades (O-1 through O-10). Officers in pay grades O-1 through O-3 are considered company grade officers. In the Army, Marine Corps, and Air Force, these pay grades correspond to the ranks of second lieutenant (O-1), first lieutenant (O-2), and captain (O-3), and in the Navy, ensign, lieutenant junior grade, and lieutenant. Officers in the next three pay grades (O-4 through O-6) are considered field grade officers. In the Army, Marine Corps, and Air Force, these pay grades correspond to the ranks of major (O-4), lieutenant colonel (O-5), and colonel (O-6), and in the Navy, lieutenant commander, commander, and captain. The highest four pay grades are reserved for general officers in the Army, Marine Corps, and Air Force, and flag officers in the Navy. The ranks associated with each pay grade are as follows: in the Army, Marine Corps, and Air Force, brigadier general (O-7), major general (O-8), lieutenant general (O-9), and general (O-10); in the Navy, rear admiral-lower half, rear admiral-upper half, vice admiral, and admiral."[10][11]