The scene "Marchel's Death" (mission 3 of the campaign for Zehir in the original Heroes of Might and Magic V). In AllCampaignMode.h5u for Heroes of Might and Magic V: Tribes of the East, there is a bug with Faidaen. He is in the same location as Marchel, but Faidaen's weapons (bow and sword) are in the correct location and fight Marchel alongside Godric and Zehir. If anyone fixes this, I'll be happy.
I also read somewhere that this is related to changing the textures of the heroes.