American Armed Forces: US Army, US Navy, US Air Force, US Marine Corps, US Coast Guard, US Space Force
Chinese Armed Forces: People's Liberation Army Ground Force, People's Liberation Army Navy, People's Liberation Army Air Force, People's Liberation Army Rocket Force, People's Liberation Army Strategic Support Force, People's Armed Police (including China Coast Guard), Militia of China (including the Maritime Militia)
EDIT:
[On April 19, 2024, the Strategic Support Force was dissolved and split into three independent branches: the People's Liberation Army Aerospace Force, the People's Liberation Army Cyberspace Force and the People's Liberation Army Information Support Force.] taken from Wikipedia.
The PLASSF has been dissolved. At the moment, I'm not satisfied we really understand the implications of this so I'm not going to edit every sister market with the new information yet, but to guide future resolvers, any new, merged or split branch of the PLA(xx..) should count.
Resolves YES if it is clear that one side has directly caused a fatality in the other
Please note that a member of one side's armed forces causing a 'civilian' (ie not a member of forces listed here) fatality will not result in a YES resolution by itself