Thanks Tmation!
That's a cool idea. I'll look at touring all the Dambuster Dams! Operation Chastise!
My girlfriend used to live in Berlin and Hamburg so I used to frequently drive over there. I always tried to find something WW2 related to see along that way. So any new ideas are appreciated!
Things I can recommend/have done along the way before:
Calais casemates and V1/2/3 sites - La Coupole, Le blockhaus, mimoyecques, Cap Gris Nez
Market Garden Bridges - Endhoven, Nijmegen, Grave, Arnheim
The Ardennes - Bastogne, Foy
The Rhine - The Bridge at Remagen