Much the Best 'Battle of Normandy 1944' documentary I know
 

The Battle Beyond D-Day with James Holland

https://www.youtube.com/watch?v=j1m8x4YwDVM

And I'm not a huge Monty fan, much prefer Bill Slim of the more famous British WWII Generals.

As a teenager I was lucky enough to know several British soldiers who fought in the early part of WWII in the desert under the excellent General Richard O'Connor and, later Claude Auchinleck, the latter of whom, they were very adamant, was a better Commander than Monty. I'm not about to argue with people who were there.