noun. A drill instructor.

noun. An instructor given to extremely rigorous training.

noun. One who gives practical instruction in military tactics and the use of arms; hence, one who trains in anything, especially in a mechanical manner.

noun. One who teaches drill, especially in the way of gymnastics.

noun. one who trains others in something

noun. a person who instructs in marching drill

noun. a noncommissioned officer who instructs recruits in military marching and discipline

"-- one you can trust, 'he said, and fondled her hastily, much as a gentle kind of drillmaster straightens a fair pupil's shoulders."

enlisted officer  noncom  noncommissioned officer  

appraisers  artillerists  assistantship  atrisk  canoeist