I am curious about Dien Bien Phu. It would seem to me that this one would have to be at the company, platoon scale to work. There would also seem to be a need for special rules for this one.
This one is a mental challenge problem to see what the engine can do. It assumes the capabilities found in Stalingrad (airfields, air transport, campaign-connected scenarios, and a multi-scaled gaming environment). Imagine an area of operations comprising Tonkin and northern Laos...a little bit of China at maybe 5 miles/8 kilometers per hex AND the valley of Dien Bien Phu at 200-250 meters per hex. You fight the operational battle on the 5-miles per hex map and the tactical battle on the 200-250 meters per hex map. Time scale for operational map is maybe 1 turn = 1 week. Time scale for tactical map is ~three turns per day (2 day/1 night). You "time warp" thru the tactical battle via the operational campaign-connected scenarios...results of one scenario are carried over to the next--operationally and tactically. Short connected scenarios...you're not playing every day, every hour of the siege--just the highlight periods. In essence both players are fighting/committing resources throughout the area of operation--Tonkin/Laos...not just Dien Bien Phu. From Operation Castor to Operation Condor and all points in between. Still thinking about how it would be done...
What do you think? How would you approach it?
Just my two cents (I have about a decade of research invested into the first indo war), if you give me the entire tonkin, I wouldn't go close to DBP with a long pole. If you give DBP, then might just as well leave the tonkin out since it stops playing any role in the game. DBP virtually exhausted operational resources for both sides, so once you're committed to it, you're not going to do anything in the tonkin.