President-elect Donald Trump’s defense secretary nominee, Pete Hegseth, is already drawing controversy over his role in former Navy SEAL Edward Gallagher’s presidential pardon.

Gallagher was a decorated Navy SEAL who drew international attention for allegations of war crimes during his time fighting the Islamic State group in Iraq, particularly during the Battle of Mosul. He was arrested and charged with several war crimes in 2018, including the killing of civilians and stabbing a teenage Islamic State group prisoner then taking a photograph with his corpse. A military court acquitted Gallagher on all charges except for taking a photograph with the corpse.