Stilgar08
Emperor
If that's the case I hope each military district can have a degree of specialization, so the ones closer to the city center are more focused on unit generation and outer ones can be focused on castles and fortification.
Interesting - I was sure you're only allowed to build one type of district one time in one city... I still highly doubt you could build up to 3 military encampments in one city - THAT would be a stronghold!

I furthermore would say that the districts are the same in every city - (science does science, military does military) and only differ from which buildings the city produces in its district...