The correct answer is #10:
The most embarassing element of the Chalabi raid is that Secretary Rumsfeld denied any advance knowledge of it, apparently truthfully. As Thomas and Hosenball tell the story in Newsweek, the rage in the uniformed ranks against the DoD top civilian leadership is so profound that the commanders on the ground in Baghdad didn’t bother to buck the decision up the line before going along with Paul Bremer’s decision to conduct the raid.
If you didn’t pick the correct answer, consider finding a handbook of military science and looking in the index under “Command, chain of.” If the possibility that the uniformed folks have decided to disregard the wishes of the SecDef doesn’t send chills down your spine, then try a political science textbook under “Military, civilian control of.”
There’s only one saving possibility I can think of: perhaps Rumsfeld had signed off on the decision to crack down on Chalabi, but gave orders ensuring that he wouldn’t literally know in advance about the details of the raid to preserve his own deniability in case the thing went wrong and needed to be blamed on Bremer (a lame duck in any case).
But leaving everyone vague about who the soldiers in Iraq report to seems like a very high price to pay for a little bit of political wiggle room.