A German commander’s assessment of the D-Day invasion

A field report submitted by Adolf Hitler’s commander-in-chief on the western front said the Allies’ invading D-Day forces gained a foothold in occupied Europe due to four key factors. In the report filed two weeks after the June 6, 1944, invasion, Field Marshal Karl R. Gerd von Rundstedt said the Allies’ “complete mastery in the air” was the No. 1 contributor to their early successes in Normandy....