History, and military historians, will be kind to Donald Rumsfeld. While Rumsfeld and his generals might, in retrospect, have made different decisions here and there, including Fallujah, his strategy was sound, his insistence that the United States not prepare to be an “occupation” army was wise, and his leadership was just what a nation at war needs.
I'm thinking he will be remembered more like Braxton Bragg.
Although he had some initial successes like the invasion of Kentucky, once he got there, he spent time installing a Confederate legislature and inaugurating his hand picked governer while his army lurched towards the decisive defeat at Perryville.
Following Chickamauga, he had a chance to wipe out the Union Army of the Tennessee but instead sat on Missionary Ridge intransigent in the belief his siege strategy would be successful right up to the day that Grant's forces routed him right off that hill.
He was so acrimonious that practically every subordinate hated him. In the end he had to be shuffled off to obscurity to prevent open rebellion in his own staff.
But at least he got a top notch military base named for him. Maybe Rumsfeld will get the same.