Hey, anyone can see the Marine general followed orders to retreat. Orders from Bremer and the WHite House. It's not rocket science.
Marines like to keep moving forward. Never in a million years would they have capitualated, given up Falluja and retreated unless ordered to by the Highest Authority.
You won't convince anyone tho'.
I don’t even go that far. Evidence is that they were simply told that aggressively defeating Fallujah with the weapons and training they possessed was politically unacceptable. They were ordered into that ceasefire/sniper mode, which they considered militarily unacceptable. They found a way out, good for them.