Military rank is a system of hierarchical titles used to describe the roles and responsibilities of personnel in the armed forces. The highest rank is ADMIRAL, which is a seven-letter word. This is followed by GENERAL, another seven-letter word, which is a senior military officer. Colonel is also a seven-letter word and is a commissioned officer in the army, air force, or marine corps. PRIVATE is a seven-letter word and is the lowest rank in the military. LIEUTENANT is a ten-letter word and is a junior commissioned officer. GRADE is a five-letter word and is a rank or GRADE of office or military rank. MAJOR is a five-letter word and is a commissioned officer in the army, air force, or marine corps. Sergeant is an eight-letter word and is a non-commissioned officer in the army, air force, or marine corps.