Casualties
According to the Novgorod First Chronicle,
Prince Alexander and all the men of Novgorod drew up their forces by the lake, at Uzmen, by the Raven's Rock; and the Germans and the Estonians rode at them, driving themselves like a wedge through their army. And there was a great slaughter of Germans and Estonians... they fought with them during the pursuit on the ice seven versts short of the Subol shore. And there fell a countless number of Estonians, and 400 of the Germans, and they took fifty with their hands and they took them to Novgorod.
According to the Livonian Order's Livonian Rhymed Chronicle, written years later,
The had many archers, and the battle began with their bold assault on the king's men . The brothers' banners were soon flying in the midst of the archers, and swords were heard cutting helmets apart. Many from both sides fell dead on the grass. Then the Brothers' army was completely surrounded, for the Russians had so many troops that there were easily sixty men for every one German knight. The Brothers fought well enough, but they were nonetheless cut down. Some of those from Dorpat escaped from the battle, and it was their salvation that they fled. Twenty brothers lay dead and six were captured.
Read more about this topic: Battle Of The Ice