Except that they don't care who they fight as long as who they fight is "honorable" to fight... Which is very subjective likely meaningless considering how many civilian populations were destroyed by the Mandalorians for the fun of it in the previous war.
"Grant Allen [...] had written a book about the Evolution of the Idea of God. [...] it would be much more interesting if God wrote a book about the evolution of the idea of Grant Allen." ~ G. K. Chesterton, The Everlasting Man