number of separate assaults by relatively small units but an immense .
concentration of power in a single main landing. The invasion site .
would have to be close to at least one major port and airbase to allow .
for efficient supply lines. Possible sites included among others, the .
Pas de Calais across the Strait of Dover, and the beaches of Cotentin. .
It was decided by the Allies that the beaches of Cotentin would be the .
landing site for Operation Overlord.
In my opinion, the primary reason that the invasion worked was .
deception. Deception to mislead the Germans as to the time and place .
of the invasion. To accomplish this, the British already had a plan .
known as Jael, which involved whispering campaigns in diplomatic posts .
around the world and various distractions to keep German eyes focused .
anywhere but on the coast of northwestern France. An important point .
to the deception was Ultra, code name for intelligence obtained from.
intercepts of German radio traffic. This was made possible by the .
British early in the war having broken the code of the standard German .
radio enciphering machine, the Enigma. Through Ultra the Allied high .
command knew what the Germans expected the Allies to do and thus could .
plant information either to reinforce an existing false view or to .
feed information through German agents, most of it false but enough of .
it true-and thus sometimes involving sacrifice of Allied troops, .
agents or resistance forces in occupied countries-to maintain the .
credibility of the German agents.
Six days before the targeted date of June 5, troops boarded .
ships, transports, aircraft all along the southern and southwestern.
coasts of England. All was ready for one of history's most dramatic .
and momentous events. One important question was left unanswered .
though: what did the Germans know?.
Under Operation Fortitude, a fictitious American force-the 1st .
Army Group-assembled just across the Channel from the Pas de Calais.