I will never forget the Drill Instructor the platoon had on PI... Sgt C Barnett. We were afraid and scared of this Mairine from day one until the last day of recruit training. He was a top notch Marine and performed his duties flawlessly.
Marine Field Artillery trainees were located in the building next to us and I remember their DI just hounding them from dusk til dawn, and this was advance training.
One thing I noticed from living next door to the Marines, you guys sure can march and drill, best marching formations I've ever seen.