Where can i find a list of every usa atrocities/warcrimes ?

https://github.com/dessalines/essays/blob/main/us_atrocities.md

Made by @dessalines@lemmy.ml no less

I'd recommend the book Killing Hope by William Blum.

https://en.m.wikipedia.org/wiki/United_States_war_crimes is also a start, though obviously misses out a good percentage of actual ones.