As Krynn's Vanguard entered the Plains of Solamnia. They used Clairvoyance to spy on the contingent of people they saw in the distance and found that the Knight's of Seiros, led by Lady Rhea was at the helm of their leadership along with Catherine. They communed with nature in a somewhat roundabout fashion, and were told it wasn't particularly a great idea to try and disguise themselves as Kingdom soldiers or Knights of Seiros.
Ignoring this advice, they disguised themselves as Kingdom soldiers after much discussion and once they were behind enemy lines, they met with Lady Rhea, now going by the name Seiros, who promptly figured out their ruse (making this NOT a war crime) and dispelled their disguises and sending them back from whence they came.
This prompted the battle to begin where the Kingdom Army had arrived, and carried out their plan of flanking The Imperial Army and Krynn's Vanguard with the Church at the Eastern and Southern flanks.
The battle commenced with Krynn's Vanguard fighting against the commanders Sylvain Jose Gautier, Mercedes von Martritz, Dedue Molinaro, and King Dimitri Alexandre Blaiddyd on the Kingdom of Solamnia's side, with Seiros/Rhea on the Church's side.
After one of the Kingdom soldiers transformed into a demonic beast, most of the party was put under a charm effect by Rhea where they were forced to assist the Church and attack their comrade's while Edelgard made it her mission to take down Rhea herself dealing massive blows and getting her on the ropes. Sylvain was doing his best to assist but was struggling, especially after most of the party afflicted by the charm broke free due to their own will, or was assisted by another member. The demonic beast was not helping the party gain any ground and they were locked at a choke point.
Meanwhile, Orla and Caspar went straight for Mercedes and while she took a lot of hits, she and those with her were holding their own and Mercedes was able to recover a significant amount of her health.
Will Krynn's Vanguard survive and march on Palanthas? Or will they fall here and need the Hands of Time to be rewound once more to give rise to a new set of unlikely heroes?