The Military Arc is going to be very intresting to impliment. We're seeing the beginnings of it with sending out of Dwarf Squads and the like, but have you given any thought as to what large scale conflicts will look like?
The current combat system seems well suited for squad based combat between 10-20 opponents, but will that scale up to army vs army engagements, assuming the usual DF level of complexity for things like supply lines, baggage trains and hangers-on?
Will the current Seige weapons (Ballista, Catapult) need retooling? Will the long awaited Boats play a part?
sorry for the multiple questions, heh.
1. & 2. Thoughts have been given about large-scale conflicts, for sure, but they're far and between from the lower-hanging fruit we have right now, so you already know your answer for this: yes, but no details yet. We'll see when we get there.
3. Yes, current siege weapons certainly need retooling, and would probably benefit from arcs-of-fire, readily available ammunition and destructible buildings, all things that don't exist yet. It seems that the AI can't handle siege weapons yet (probably because of those reasons) so it might be something that appears whenever other multitile vehicles, such as moving embark caravans and boats, make their debut, and that could probably add more options (for example, laying siege to a coastal town or fortress through a beachhead or something). Who knows, probably other appropiate siege weapons, such as rams or moving towers, could make an appearance as well.
For now, we'll have to hold our breath for a while. Besides, starting small-scale skirmishes sounds exciting enough, can't barely wait for that.