Patrick K. O’Donnell is the author of The Unknowns: The Untold Story of America's Unknown Soldier and WWI's Most Decorated Heroes Who Brought Him Home. He is a bestselling, critically acclaimed military historian and an expert on elite units. He is the author of eleven books, including Washington’s Immortals, We Were One, and Dog Company, and he is the recipient of several national awards. He served as a combat historian in a Marine rifle platoon during the Battle of Fallujah and speaks often on espionage, special operations, and counterinsurgency. He has provided historical consulting for DreamWorks’ award-winning miniseries Band of Brothers and for scores of documentaries produced by the BBC, the History Channel, Fox News, and Discovery. He is also a regular contributor to several national publications and shows.