Early Indo-European Ritual Magic for a Defeated Army - Learn Hittite Class 10 Addendum

A little discussion concerning my recent video on the Hittite ritual performed in order to cleanse a defeated army. It is an example of early Indo-European ritual practice in action, but does it tell us anything about early Indo-European beliefs?
Book referenced:
Mirecki, P., & Meyer (Eds.). (24 Aug. 2015). Ancient Magic and Ritual Power. Leiden, The Netherlands: Brill. doi.org/10.1163/9789004283817