Slitherine

4-week sounds like something I can manage

Signing up for the late medieval. I'll follow up with nation choice. [Edit: East Rome it is!]

What happens if there is a battle between a player nation and an AI nation?

Welcome aboard, Sulla! East Romans it is. We've just completed the first round and the last battle should be wrapping up shortly, and then we'll move on to the second round. Constantinople so far is holding the line.

Here's the thread:
https://www.slitherine.com/forum/viewtopic.php?t=112155

If a player nation plays an AI nation, then a player can volunteer to do the AI or I will take it. SnuggleBunnies has also volunteered to play some AI nation battles.