Grand Strategies (Part I) - The Cambridge History of the Second World War
Organization of the Kriegsmarine - Wikipedia
Ranks and insignia of the Nazi Party - Wikipedia
Anglo-American Chain of Command in Western Europe, June 1944 | Normandy Invasion | Britannica
Jonathan Kraetsch on German Army defending Normandy
Images of War: Himmler: Hitler's Henchman (Paperback) - Walmart.com
HyperWar: US Army in WWII: The Supreme Command (ETO) [Chapter 20]
High Hitler: how Nazi drug abuse steered the course of history | History books | The Guardian
HyperWar: The Battle of Britain--A German Perspective [Addendum/Appendices]
About Chain of Command TV Show Series
The Impact of the German Chain of Command on D-Day | Britannica
Nazi Germany's Last Leader: Admiral Karl Dönitz | The National WWII Museum | New Orleans
SS | Holocaust Encyclopedia
Medical chain of command in the Third Reich | Holocaust Encyclopedia
The Unwritten Order: Hitler's Role... by Longerich, Peter
Hitler's Generals by Barnett, Correlli
German Chain of Command in Western Europe, June 1944 | Allied Invasion, Wehrmacht, Panzer Groups | Britannica
Behind Enemy Plans: A Process-Tracing Analysis of Germany's Operational Approach to a Western Invasion > National Defense University Press > News Article View
A Psychological Analysis of Adolf Hitler's Decision Making as Commander in Chief: Summa Confidentia et Nimius Metus - Dietrich Dörner, C. Dominik Güss, 2011