Both were started to fight heresy: the Dominicans the Cathars, the Jesuits the Protestants. Both were started by soldiers. Both have unique spiritual disciplines.
What's the difference? Meet any Cathars lately?
I love this to the very core of my being.
https://www.amazon.com/Hutzler-3571-571-Banana-Slicer/produc...
https://cdn.netbsd.org/pub/pkgsrc/packages/NetBSD/sparc64/10...
I'm not sure earlier books like that would pass these days without considerable liberal angst; that one for instance celebrates a certain lost kind of man of action with a brute uncompromising view of the mercenary perspective of the world.
For lovers of intelligent action novels though like me, he's one of those writers I always considered a sure bet when taking a punt with an Audible credit. RIP.