No, he makes one phone call. And, unless his Generals mutiny to stop him, whatever he wants to happen, happens.
We are supposed to have checks and balances, but when push comes to shove, there is only one CinC. Believe it or not, that guy has no political or military experience, but claims to know more about everything than his generals. His own words, on TV.
(I'm no way comparing Trump to him)... Hitler did just that, ignore his experiences generals... and it cost him his life and dream.