The pentagon chose the first man in charge before Bremmer as I recall. Bremmer was called in to fix a quickly developing mess to the best of my recollection. That's all based on memory, but it's obvious our troups would be the main force for law and order after over throwing the Iraqi government so that the pentagon would have been involved seems reasonable. Now Rummey may well have not been involved with the planning, but if the pentagon was involved he either should have been or was responsible for putting someone competant in charge. Same goes for Bush and the buck stops there, but he won't fire himself.