These AARs are superb - and the armies and terrain lay-outs very impressive. Apologies if this has already been covered earlier on in the thread, but the title suggests you are using the NMTB rule set for these enormous games. I have the set and haven't tried them yet but had understood it is designed for much smaller, more skirmish level games. Are you using modifications for NMTB to game this scale of battle, or another rule set entirely?
Cheers