Joining the Military Drill Instructor Sgt. Robert A. Atwood, Platoon 3052, Lima Company, 3rd Recruit Training Battalion, inspects a recruit of Lima Company, 3rd Recruit Training Battalion, May 7, 2016, on Parris Island. U.S. Marine Corps photo A Marine Explains What He Loves Most About Being A Drill Instructor By Task & Purpose on July 18, 2017 T&P on Facebook Enter to win a year's worth of mortgage or rent payments! BBMC's annual "We've Got Your Six Sweepstakes" is now open to veterans, active duty, and spouses. Learn more and enter.