I would think that the good commander would go back to his boss with a variety of COAs. His best take at how to do what he has been told to do, with a full candid and honest assessment of what he believes the outcome will be. Along with that, if he thinks that first COA is a loser, he must bring alternatives, with powerful rationale for why they are superior and will better accomplish the commander's true intent, or perhaps best serve the country's national interests.

He must do this with the moral courage going in to either then do as he is told or respectfully say he cannot and step down. At this level it must be about the nation, and not egos; though I realize history tells us that is oft not the case.