https://www.bbc.com/news/articles/c3geeyp2505o
This was quite a coordination in the history of war.
The Normandy region has a peculiar intersection with the # 911.
https://en.wikipedia.org/wiki/D-Day_(military_term)
https://en.wikipedia.org/wiki/Omaha_Beach#Plan
https://warfarehistorynetwork.com/article/seven-meetings-to-d-day/
https://history.stackexchange.com/questions/14894/was-there-a-plan-b-for-the-d-day
https://thedigitallabyrinth.blogspot.com/search?q=D-Day+and+Normandy
