Obama.
Every other candidate pretends to revere the military. Obama plain doesn't.
Every other candidate would experience media scrutiny the likes of which Obama has never experienced.
Every other candidate belongs to a party full of people like us, who are ready to eat our own young if it will prevent the types of things we're talking about... whereas Obama's party watched him do the 180 degree polar opposite of everything they wanted him to do, and turned around and started whistling idly.