Marc Romanych is a retired US Army combat arms officer. He has a BA in History from the University of Maryland and an MA in International Relations from St Mary's University. Interested in the Maginot Line since 1995, Marc has extensively explored its fortifications. He is a member of Association du P.O. de Sentzich, a Maginot Line preservation group. Marc lives near Baltimore, Maryland.
Martin Rupp has a BA from the University of Applied Sciences, Saarbrücken. Since 1987, he has researched German records concerning combat operations against the Maginot Line and surveyed the battlefields upon which the battles occurred. From his findings, Martin produced an in-depth study of the German 95th and 167th Infantry Divisions' battle for Fortified Sector Faulquemont in June 1940. Martin lives in Saarbrücken, Germany.