Well, pdq and/or artbrooks, it's perfectly plausible, it seems to me, that a lieutenant might disagree completely with the political aspirations of the president, but still maintain a great deal of respect for his commanding officer. So if an order were to be issued, coming from his CO, he might very well obey it, in spite of his distaste for the Commander-in-Chief. In that case, he can still maintian his political point of view, but he'd done nothing that is actionable.