For Reference, the sides in the war are Kindara/Zonasa vs. Cathay/Arcaea/Sorraine/Ohnar West . . . the geography involved means that Kindara, Zonasa, and Cathay do most of the fighting, though Arcaea and Sorraine get to do a fair bit as well. Ohnar West has a really long way to travel to get to the fight. Arcaea I think is doing other things than just fighting, I believe they are also colonizing rogue regions that they plan to make into its own realm at some point. I don't know how much of their army is devoted to which thing, but they certainly weren't bringing their full army south.