At the least, currently the order is much more secular now. More associated with the Crown then the Church, dedicated to defending the land and the innocent. Not to say it wasn't like that before, but the religious bent is unofficial now.

The Iron Rose Knights are 200 years old and very popular publicly, though some nobles don't like them. The Crown is a pretty big fan, especially the Princess, and they're frequently used to defend citizens of the Kingdom and destroy criminals and raiders, and dangerous monsters such as dragons. If a dragon shows up and Thaln, you can bet the Iron Roses will be the ones sent to deal with it.