What is more destructive, the war of territory or the war of faith?

Question

I just want to know more about the situation here in MIndanao where MILF wants to grab the some local city here. They want it in war.

Answer 1

You can start here, there are several more stories that state their goals.

Answer 2

War is a stupid and pointless act of aggression that humanity must put an end to.

Given the choice of the two, war of faith is far more destructive because the goal is to wipe out the opponent and/or convert the populace to your chosen faith. In order to do this you would have to make their environment entirely uninhabitable or capture the entire populace.

As for a war for territory, you aren't going to obliterate a place that you hope to occupy.