Drill instructor
![A Sergeant Instructor (Gunnery Sergeant) corrects an officer candidate](/Images/godic/202501/10/Drill_instructor_at_the_Officer_Candidate_School2624.jpg")
![A Drill Sergeant of the Scots Guards shouting orders to his troops](/Images/godic/202501/10/Drill_Sergeant_Shouting_Orders_MOD_451555792624.jpg")
![A U.S. Marine Senior Drill Instructor supervises the inspection of his platoon](/Images/godic/202501/10/Senior_drill_instructor2624.jpg")
![A drill instructor encourages an officer candidate to properly perform pushups](/Images/godic/202501/10/US_Navy_101029-N-8848T-223_Gunnery_Sgt._Duncan_Hurst_encourages_an_officer_candidate_to_properly_perform_pushups_during_the_first_week_of_the_12-we2624.jpg")
A Drill Instructor is a non-commissioned officer in the armed forces or police forces with specific duties that vary by country. For example, in the United States armed forces, they are assigned the duty of indoctrinating new recruits entering the military.