Rare WWII Preparation for ‘Operation Sea Lion’ Top Secret Documents – for the invasion of England, 22 pages with reports stating that there are numerous problems concerning the material, equipment, Hitler postponed the invasion for spring 1941, then cancelled altogether in favour for the ‘Unternehmen Barbarossa’ [Russian campaign], marked to the top [Secret Commando Operation], date 17.10.1940, for Hitler’s ‘Elite Division’ station at the Channel coast in France, typed documents appear in G condition