So, I just got the defense event for the first time playing as the new Golden Order Empire faction. Talabecland was under attack by Norscans. I chose the option to send an army. Minor spoiler alert for those who want to find out what happens ahead.
I was sent into battle with an arch lector lord, two swordsmen, a handgunner, and two empire knights. My "allies" had two swordsmen, two halberdiers, two crossbowmen, and an empire captain. The enemy forces were: A Norscan lord, a marauder champion, 7 marauders, 3 marauder hunters, and two skinwolf units. I assert that this is a grossly unfair matchup if I were able to control all the forces and deploy them myself. Instead, I was reinforcing the fight from the side. It was on that new map with the forest in the center, so my "allies" deployed hidden in this forest and left me to die. I tried to lead their army to the cowards with my empire knights, but of course, skin wolves are faster than empire knights so they ate them for breakfast.
To add insult to injury, apparently in addition to paying for the cost of recruiting the army, it comes out of your upkeep apparently, tanking my income to 0. I am deeply disappointed by this mechanic after being pretty excited to help defend the empire. Overall, I do like the new changes, but it feels really bad to have your army, generated by RNG, half owned by the idiotic AI, and reinforcing from a weird angle. This needs to be fixed.