Some body making decisions that will result in people getting killed has to be able to make them without letting the enormity of it keep them from thinking clearly. Aspies can do that. (So can sociopaths, but never mind that.)
U. S. Grant and Sherman both seemed to me like Aspies.
The big mystery about Monty is why anybody ever thought he was a great general. He sat on his hands in Africa until he had such an overwhelming superiority in men and equipment that just about anybody could have beaten Rommel by the time he acted. He also dawdled before trying to take Caen, allowing Germany to bring up reinforcements. Then he failed in two or three frontal assaults before listening to advice to surround the city first. During the Battle of the Bulge, he might as well have been on another continent. Market Garden was only one of his numerous failures. Market Garden wasn't just overreach, it was overreach that didn't allow for anything but perfect success at any point.