Well the oath he took says “and I will obey the orders of the President of the United States and those of the Officers appointed above me according to regulations and the Uniformed Code of Military Justice, so help me God”. If he went beyond that at best a court martial, at worst prosecution for treason.
@questionWeaver “Milley went so far as to pledge he would alert his counterpart in the event of a U.S. attack, stressing the rapport they’d established through a backchannel. ‘General Li, you and I have known each other for now five years. If we’re going to attack, I’m going to call you ahead of time. It’s not going to be a surprise,’” the book says. Milley did not relay the conversation to then-President Donald Trump
@MalteseFalconPunch jeesh... No they work for you. The president knits socks and scarves and is not the Commander in Chief.
Although the office of Chairman of the Joint Chiefs of Staff is considered very important and highly prestigious, neither the chairman, the vice chairman, nor the Joint Chiefs of Staff as a body has any command authority over combatant forces. The Goldwater–Nichols Act places the operational chain of command from the president to the secretary of defense directly to the commanders of the unified combatant commands