Good update. I didn'T understand why there are 10000 spare soldiers, though. After all, the Batavians will have to guard their, probably less defensible, northern frontier. And even without that, they could go conquering, right?
Well for one the Germanic tribes (Batavians are a special case) did not have professional militaries, the soldiers were just armed men, the Batavians included, the only reason that Civilis has 10,000 armed, trained and disciplined soldiers at his disposal was because of the Romans, so when there were no more Romans to obey the Batavians wouldn't need such an awefully large army (for the size of the tribe) army at the ready.
And besides, the Batavians were well liked and respected by their fellow Germanics, and were on good terms with all their neighbours, especially the Frisii tribe, which was the largest tribe Germanic tribe in the Netherlands. And about going out and conquering their neighbours that's a story for another time.
And Monty, I got a virus on my old computer and have to clean/scrap the hard drive, I will lose many of my links and notes now, so, without my pc it will take a while to look for your maps, to say the least.