Definition of "staff-officer" []

• An officer forming part of the staff of a regiment, brigade, army, or the like; in the United States navy, an officer not exercising military command. (noun)

The Century Dictionary (Public Domain)

• "Garesche's appalling death stunned us all, and a momentary expression of horror spread over Rosecrans's face; but at such a time the importance of self-control was vital, and he pursued his course with an appearance of indifference, which, however, those immediately about him saw was assumed, for undoubtedly he felt most deeply the death of his friend and trusted staff-officer."
• "When I entered McLean's house General Lee was standing, as was also his military secretary, Colonel Marshall, his only staff-officer present."
• "The enemy being thus checked, I sent a staff-officer -"