I had an Idea that we could do a recreation of the landing at Normandy.
4 Frames.
Frames 1 and 2 maybe, the allied manning CV guns, manning LVT's with cannons, troops and supplies. The Axis having Shore Batteries, M3's, M-16s to defend.
This means nearly everyone in GVs and Manned guns and maybe a few C-47's with supplies and troops to go inland.
A terrain must be set to have many many shore guns set up and the beach head would be made up of many map rooms requiring 50 or so troops. Gold, Juno, etc.
Frame 3 and 4 could also switch sides and do it again or some sort of Air Only campaign or a mixture.
Stalin's 4th did a great job of balancing this, as I recall.
I posted this over a year ago, I think.