Not having seen any video to determine if this is desecration or simple cremation I won't comment on that. However I will say that I'd do it just to ensure that the Taliban/Al Quaida weren't using the corpses as boobytraps (come along, lift the body, bang!- new corpse on the ground).

The other items are pure and simple warfare tactics. Your teenager probably uses the loud music on you to confuse, confound, and anger.
And since a typical Islamic male (I know it's a stereotype) believes that even the youngest boy is above the most knowledable woman, I'd do the same. Why should we play war on their terms?