This anthology presents a collection of 21 articles describing the full range of U.S. Marine Corps operations in Iraq from 2004 to 2008. During this period, the Marines conducted a wide variety of kinetic and non-kinetic operations as they fought to defeat the Iraq insurgency, build stability, and lay the groundwork for democratic governance. The selections in this collection include journalistic accounts, scholarly essays, and Marine Corps summaries of action. Our intent is to provide a general overview to educate Marines and the general public about this critical period in the history of the U.S. Marine Corps, the United States, and Iraq. Many of the conclusions are provisional and are being updated and revised as new information and archival resources become available. The accompanying annotated bibliography provides a detailed overview of where current scholarship on this period currently stands. The editor of this anthology, Nicholas J. Schlosser, earned his doctorate in history from the University of Maryland in 2008 and has worked as a historian with the Marine Corps History Division since 2009. His research examines U.S. Marine Corps operations during Operation Iraqi Freedom, focusing on irregular warfare, counterinsurgency operations, and the al-Anbar Awakening