Iraq War doentary title?

I have been looking for an Iraq war doentary that I watched a little over a year ago on YouTube. I do not remember the name of it, but there was one speaker who was a young guy and was over in Iraq with the Marines. In one scene, it was called "hearing ghosts", and there were hundreds of Iraqis yelling into some sort of sewer system and hearing themselves echo. They thought it was the people that were killed under Saddam's regime. They were hopeful and actually thought that there were people under the ground still alive. In the beginning of this doentary, it showed views from the tank division moving in to Baghdad in the desert. The one reporter may have been British. You saw some Iraqi's greeting them in the vast desert with American flags. The reporter was with the tank crew during the night just getting ready to cross the border into Kuwait. They got the message and were excited to cross the border. They then went on to show Baghdad Bob telling the Iraqi people that we weren't in the desert, and we were recording tanks in some vast desert as propaganda, to make it look like we were invading Iraq. Does anyone recall any of these events? The hearing ghosts scene played some eerie music. This may have been a BBC or CBC doentary? I'm not sure. Thanks for any help.