Posted here are links to the UCMJ and Geneva Convention. Anyone who takes an oath to protect the US constitution should and could be held accountable to these laws.
UCMJ:
jsc.defense.gov/Portals/99/Documents/UCMJ%20-%2020December2019.pdf?ver=2020-01-28-083235-930
Geneva Convention:
www.icrc.org/en/doc/assets/files/publications/icrc-002-0173.pdf