Law of war training for new troops was eliminated back in April.[1] The core concept that members of the US military have a duty to resist illegal orders is no longer taught to troops.
Recall Trump's comments after several US members of Congress made a video along the lines of "you must refuse illegal orders." Trump called this "seditious behavior, punishable by DEATH!"[2]
[1] https://www.veterannews.org/veteran-news/army-eliminates-sev...
[2] https://www.npr.org/2025/11/20/nx-s1-5615190/trump-democrats...