I am not sure about the servers, but the game mode is "hold".
There seem to be 2 AAS maps:
Elysian Fields
Combat in Dense Forest
You will get them if you use the filter option.
In my german version it is "Halten", english version might be "capture and hold" but iam not sure.
I just found out about the hold MP games, and i like them a lot.
Similar to Joint Operations some years ago :D
Anyway, my questions
- Are there any servers that specialize in HOLD?
- Which one is the Mobile HQ, and does it exist on every HOLD map?