This drama feels a bit forced and disingenuous. There were a few bishops that were known to engage in war, and then you get knightly orders like the templars, which are the proper inspiration for the clerics (at this point).
>but-but-but these were not priests!
No, they were knights and regular soldiers, working and fighting for a religious order, and being more pious than the regular mercenary (at least that's the ideal).
Other examples would be the Sikhs or the Sohei. Or any muslim officially engaging in a Jihad.