A couple of interesting maps below.
The map shows all the bridges that were destroyed by the Allies prior to D Day to “isolate” the land area from the rest of Germany/Europe
Location of German Radar and other report sites prior to D Day.
Operation Neptune - “D Day Landings”
Re: Operation Neptune - “D Day Landings”
Lance-Corporal George Gagnon, 14th Field Regiment, Royal Canadian Artillery (R.C.A.), aboard a Landing Ship Tank fusing hand grenades to be used on D-Day. Southampton, England, 4 June 1944.