Clayton Donnell has been a student of history for the past 25 years. He grew up in the United States but spent several years in Europe, where, at an early age, he acquired what would become a lifelong interest in the study of fortifications. He collaborated on a recent bibliography on European fortifications and has written articles on the Maginot Line and the forts of Belgium. His was the first English language website on the Maginot Line, and he also has an extensive site on the battle of Liege in August 1914. Clayton is married with three children and resides in south-eastern Pennsylvania. He is retired from the US Air Force. This is his first book for Osprey Publishing.