This is a study of the Second Battle of Fallujah, also known as Operation Al-Fajr and Operation Phantom Fury. Over the course of November and December 2004, the I Marine Expeditionary Force conducted a grueling campaign to clear the city of Fallujah of insurgents and end its use as a base for the anticoalition insurgency in western Iraq. The battle involved units from the Marine Corps, Army, and Iraqi military and constituted one of the largest engagements of the Iraq War. The study is based on interviews conducted by Marine Corps History Division field historians of battle participants and archival material. The book will be of primary interest to Marines, other service members, policy makers, and the faculty and students at the service schools and academies. Historians, veterans, high school through univeristy history departments and students as well as libraries may be interested in this book as well. With full color maps and photographs.