So, this whole question was in fact a way for you to flatter the US military as being #1 in the World, right?
Yep, it wasn't about Politics or anything.
If you ever get out of boot camp of any three sectors of that Nuclear machine with enough ICBMs to blow up 50 Earths, 5 Russias, 10 Chinas, 40 Indias, 125 Pakistans, 200 UK+France and Canada along the ride of a true Armageddon,... just let us all know if a successful carreer is more about Life or Death of the many rather than being Patriotic or hypnotically enroled since childhood by schools & an agenda of protectionism.
You have a choice and that's the beauty of Freedom - in the meantime, consider this from someone who knows the extreme conditions of Officers Training; your personal values can't stand in the way of a clear order to legitimately defend what is worth protecting such as your family, friends and Society.
Flags, weapons & enemies included.
Nobody is best military wise on our planet, boy. As history has proven many times over.