captain (also general,etc.) of the field: the captain (or general, etc.) commanding in a battle or campaign; also in extended use; cf. field general…

(a) a general who commands troops on the field of battle; (b) (in extended use) a person who organizes and directs a sports team on the field of…

Military. An army officer ranked above a captain and below a general; a major, lieutenant colonel, colonel, or (in the British and other…