Any of the old SF guys would of. The Brits, for hundreds of years were good, very good. Post WWII, not so much.
There was no, zero, zip post reaching into Baghdad planning. The Army thought that State would handle it. The WH and State, thought the Pentagon. No one was fired.( Bush’s never fire anyone )
I've heard several discussions that hit the nail on the head. After Vietnam, the general conscientious was that we should toss all of our COIN/FID doctrine out the door because there was no way we wanted to get involved in something like that again. Which is also precisely why our enemies have choose to fight us as they do...
That was a deliberate policy and deception engineered by Donald Rumsfeld. Planning was the responsibility of CENTCOM, not the Army, and CENTCOM understood full well that a Phase IV plan was required. Both CENTCOM and the Army also understood what that plan needed to look like. As this article clearly explains, their political masters had a different idea, and worked to ensure that CENTCOM would have neither the plan nor the means to execute an effective post conflict strategy. Rumsfeld thought we could just declare victory and leave.
Donald Rumsfeld and Jerry Bremer will go down in history as two of the biggest idiots to ever appear on the national security scene.