WWII History - Maisy Battery (German Bunker Complex near D-Day Landing Beaches)

Just flew over MSFS’s rendition of the Maisy Battery in Les Perruques, Grandcamp-Maisy, France.
This was the site of a complex of German Army bunkers near the D-Day landing beaches, consisting of 12 stone buildings and 1,500 metres of tunnels, as well as medical quarters and rooms for officers.