Crossword Genius

Senior military rank (7)

Ross

I think it could be either:

colonel

general

(Other definitions for colonel that I've seen before include "Army rank" , "Army three downn" , "Senior army officer" , "Military rank" , "Army officer ranking below a brigadier" .)

I've seen this clue in The Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.