It wouldn't be too hard to design a carriage that could hold maps have a small permanent staff etc. No need to worry about setting up breaking down weather etc.
If they wanted to be luxurious a small permanent bed for the General could be fixed or even a small oil steel fire installed. Geez if you wanted to go over the top a shower is not out of the question.
But the basics of a mobile map room would not be hard to do sure if an army had to go off road where no Dragons could go it would have to be left behind but in most instances where an army goes its dragons go where a dragon goes a command carriage could go.
Any Army vets historians willing to pipe in and shoot my crazy idea down? (or not
