Monty’s safe. He could be a petty little prick, like most famous generals, but he did his job well.
Patton is pretty safe too. He was a fighting general, and did his job well. The popular mind remembers him for that stupid slapping incident rather than the serious work he did in WWII, and more of which he would have done if not forced to be the commander of a diversionary army early in the advance from Normandy.
The differences between those two successful generals and Mac are that Mac had a spectacular failure in the Philippines which, courtesy of his carefully controlled censorship and personal publicity machine, was magically wiped from the popular mind and replaced by the “I shall return” rubbish. It never seems to enter the popular mind to ask why, if he was so bloody good, he didn’t win while he was there the first time, having had years in command of the Philippines forces to prepare for the Japanese threat that planners had anticipated since the early twenties and having the best bomber force outside the US which was lost due to his early inaction and incompetence. That early inaction might well have been due to divided loyalties to his obligations as a US commander and his desires as a recent former Philippines supreme commander with strong links to the Philippines to refrain from action which might have dragged the Philippines unnecessarily into the war. Or maybe he was just in a blue funk, this being the first time he had had to deal with anything remotely on this scale.
During the SWPA Mac was, unlike his crucial early Philippines time, a very comptent commander. Contrary to the “Dugout Doug” slur he did not lack personal courage. To the consternation of his subordinates, he exposed himself unnecessarily to fire at various times in the SWPA campaign in the best traditions of leadership under fire. He probably genuinely cared for his men and did his best to make sure they were properly supplied. He also expected the best of his men, and would not accept less than consistently good performance from them or their commanders (none of which commanders ever got remotely near his lousy early performance in the Philippines).
I’m not sure that he was the brilliant general many admirers claim. He wasn’t the only one bypassing Japanese garrisons on the way to Japan. It’s also questionable whether the SWPA campaign was critical to the defeat of Japan, and whether the forces employed in it might have been better used in support of the central Pacific thrust.
Mac was also a petty, vindictive, self-seeking, self-aggrandising, power-seeking, publicity-seeking, relentlessly self-promoting and arrogant bastard who could always be relied upon to sacrifice someone else if he looked like being in trouble, while at the same time being loyal to those loyal to him. In other words, he was just a normal politician who, like many very senior commanders, just happened to be in uniform.
Anyone wanting a comprehensive and reasonably balanced (although not completely balanced) account of Mac should read William Manchester’s “American Caesar”. Manchester served as a US Marine in the Pacific and recounted his and his comrades’ experiences in “Goodbye Darkness”.