D-Day was almost a German holiday:
The Volokh Conspiracy
June 6, 2006
http://www.davekopel.com/NRO/2000/Why-D-Day-Mattered.htm
http://volokh.com/archives/archive_2006_06_04-2006_06_10.shtml#1149614812

During World War II, the importance of an armed citizenry for defense against foreign tyranny was once again confirmed, as Dan Gifford and I suggested in a 1994 column for the D-Day anniversary. In another column, “Why D-Day Mattered,” I examine the various hypotheticals about D-Day, such as the consequences of a defeat of the invasion, or of an invasion in 1943.