For 21 days in the spring of 2003, two US Army and Marine divisions race north across the Iraqi desert from Kuwait. Their mission: seize the Iraqi capital as quickly as possible. The planners of Operation Iraqi Freedom believe that taking Baghdad in a hurry will be like "cutting off the head of the snake" and will bring a speedy end to the war. But it won't be a cakewalk. A tenacious force of guerrilla fighters throw up roadblocks. They call themselves Saddam Fedayeen--Saddam's Men of Sacrifice. The Fedayeen weapon of choice is the RPG--the rocket-propelled grenade. This nasty piece of handheld artillery can stop the Marines' thin-shelled armored personnel carrier, and it can even put a tank out of commission if it hits it in just the right spot. We'll hear from troops who found themselves on the receiving end of punishing RPG barrages and veterans who recount stories of brutal shootouts on the bloody road to Baghdad.

Title from container. Originally broadcast on the History Channel.