Robert Forczyk has a PhD in International Relations and National Security from the University of Maryland and is a specialist in European and Asian military history. He retired as a lieutenant colonel from the US Army Reserves having served 20 years as an armour officer in the US 2nd and 4th Infantry Divisions and as an intelligence officer in the 29th Infantry Division (Light). He is the author of 26 other books, ranging from warfare in the French Revolutionary period to the Second World War. He regularly uses the captured German records at the National Archives and Research Administration (NARA) in Maryland to seek new insights into German operations in the Second World War, including Operation Sea Lion.