Article II, Section 2, Clause 1:
The President shall be Commander in Chief of the Army and Navy of the United States, and of the Militia of the several States, when called into the actual Service of the United States; he may require the Opinion, in writing, of the principal Officer in each of the executive Departments, upon any Subject relating to the Duties of their respective Offices, and he shall have Power to grant Reprieves and Pardons for Offences against the United States, except in Cases of Impeachment.
At a minimum, all agree that the Clause has two separate but related purposes: First, in response to the charge in the Declaration of Independence that the King had “affected to render the Military independent of and superior to the Civil Power,” it ensures civilian superintendence over the military—and, as such, the subordination of the military to civilian (and democratically accountable) control. Second, and in contrast to the experience under the Articles of Confederation, it places such civilian superintendence in the hands of a single person. As David Barron and Martin Lederman’s definitive academic study of the Clause explains, “the textual designation of the President as the Commander in Chief was intended to ensure that that officer, and no other, would be ultimately responsible for performing that role, whatever it was to entail.” To that end, they continue, the Clause “suggests that, at least with respect to certain functions, Congress may not (by statute or otherwise) delegate the ultimate command of the army and navy . . . to anyone other than the President.”
Nancy and Milley are in deep doo doo