In one of the boldest gambles in modern military history, just three battalions and fewer than a thousand men launched a violent thrust of tanks and Bradley Fighting Vehicles into the heart of a city of 5 million people and, in three bloody days of combat, ended the Iraqi war. Thunder Run is the story of the surprise assault on Baghdad - one of the most decisive battles in American combat history - by the Spartan Brigade, the Second Brigade of the Third Infantry Division (Mechanized).