This short article answers the question of whether, in the context of current American civil–military relations, senior military professionals may loyally dissent from a decision by civilian authorities, even including by resignation. Stated another way, can their constitutional duties to obedience to civilian authority ever clash so severely with their responsibilities to their profession and its fiduciary trust with the American people that dissent is obligated. The position offered here is that senior military professionals always retain the moral agency for such dissent. It inheres in their role as a steward of an American military profession exercising the discretionary judgments that are the moral core of their professional work.