Why do the mohicans set up the English horses loose after the ambush?

The Mohicans set the English horses loose after the ambush to create chaos and confusion among their enemies, making it harder for them to regroup or mount a coordinated defense. This tactic also serves to disrupt communication and transport, further weakening the English forces. By freeing the horses, the Mohicans aim to assert their dominance and capitalize on the disarray caused by the ambush.