My thoughts on the tactical situation: Dangerous.
With the enemy cavalry and flyers on the field, both formidable forces, we could attack any one area and find ourselves ganged up on shortly by more than we would like to deal with. Assuming the enemy can redeploy their forces quickly, which is an assumption we should make for safety. If we can defeat the enemy in detail we are in a good situation, however.
The highest priority target on the battlefield for us is the siege weapons and probable engineers with them. Those are critical, high value assets for an army. The looting soldiers in the village are low priority; they'll probably respond slowly and aren't really important. If we can take out the enemy cavalry and wyverns, those are the next most valuable assets the enemy has after the engineers. Mobility gives an enemy army a lot of tactical options that infantry don't offer. We want to take those options away if possible.
Here are a couple possible approaches:
[] Plan Achieve Mobility Supremacy
-[X] Ryza, Kelton (mounted), and the pegasus knights attack the wyverns of Group 1.
-[X] At the same time, Artemis leads a friendly cavalry charge at the enemy cavaliers of Group 2. Friendly infantry join the following round, lead by Elena, Alejandro, and Belle.
-[X] If Ryza's group finishes off the wyverns first and Artemis' group is doing okay, Ryza's group will attack the enemy siege engines and likely engineers in group 4. These might be the most valuable target on the battlefield.
--[X] If Ryza's group finishes first and Artemis' group looks like they need help, Ryza's group will hit the enemy of Group 2 with an aerial charge from the rear and help Artemis mop them up. If it appears situationally doable considering the state of reinforcements from the enemy's main camp, once Group 2 is mopped up Ryza's group and the friendly cavalry will engage the enemy's siege engines and probable engineers before withdrawing from the field along with the infantry. The infantry will hold open their line of retreat while they deal with Group 4.
-[X] If Artemis' group finishes off Group 2 first, Artemis will lead the friendly cavalry in a raid on the enemy siege engines and probable engineers in Group 4 if it appears viable given the state of enemy reinforcements. Friendly infantry will hold open the line of retreat along the road.
-[X] When the tatical situation starts to shift towards the Imperial troops, Artemis will sound an orderly retreat up the road.
[] Plan Shock Cavalry and Awe
-[X] Ryza will use bolting to keep the enemy main camp busy. Belle, Kelton, and Alejandro's group will protect Ryza, act as an emergency reserve if any friendly group gets into trouble, and guard the path of retreat down the road.
-[X] Artemis will lead the friendly cavalry except for Count Sobeski's group on a raid of the enemy's siege engines and probable engineers in Group 4.
-[X] Count Sobeski and the pegasus knights will pin down the enemy cavalry of Group 2 while friendly infantry not guarding Ryza engages them, in a hammer and anvil approach. They don't need to defeat the enemy cavalry, just keep them busy so they cannot reinforce Group 4.
-[X] If things go well, and the main enemy camp proves unable to reinforce effectively, Artemis' group can reinforce Count Sobeski and the Infantry and then move on to the enemy in Group 3.
-[X] If the enemy wyverns engage a friendly group, the pegasus knights will disengage from their fight and move to the friendly group to assist.
-[X] If Ryza's group is engaged, she will cease bolting to defend herself, shifting as needed.
-[X] When the enemy siege engines and accompanying men are eliminated, Artemis will sound an orderly retreat up the road.