Who is Sergeant Jonathan Pentland? Updated: Apr 15 2021, 4:50 ET Invalid Date, SERGEANT Jonathan Pentland has hit headlines across the US after appearing in a video that took the internet by storm and went viral. The Fort Jackson drill instructor has found himself in hot water with authorities - but who is he, and what is he accused of? 4 Who is Sergeant Jonathan Pentland? Jonathan Pentland is a US army first class based at Fort Jackson in Columbia. According to social media accounts connected to Pentland, he has been stationed at Fort Jackson since at least 2019 and has worked as a drill sergeant at the garrison, a 53,000-acre complex that trains 50 per cent of all soldiers and 60 per cent of women who enter the Army each year.