Something you didn't say, something significant, is the US military is made up of US soldiers.
A good many of those soldiers will have "Patriot Sympathies" (of many kinds).
This will lead to a great deal of information leakage, "lost" equipment going to militias, sabotage, etc.
Regardless of oaths to US military, an innate sense of duty to some personal ideal of USA will over weigh for a significant number, and a good percentage of those will remain embedded, organized, and difficult to root out.
They will also exist in various numbers from the lowliest boot to the highest general.
Sure, that could be a factor. Didn’t really seem to stop soldiers from steamrolling through American cities during the civil war, doesn’t seem to stop cops from messing people up during protests, and doesn’t stop genocide in other countries. We, as a species, are pathetically easy to manipulate through in-group, out-group thinking, which honestly is much of the basis for patriotism anyway.
