The fire real order a real a titan order governed by the concept called the firebreak calculus
It’s not an actual equation but I’d a general principal of taking the fight to the enemy, the question specifically posited by the calculus is “how much good can I do if I find a spot and fight till I die”
The founder or at least an original members of the firebreak order was wei- Ning the Fire Victorius is a flame she lit either at the founding of the order or when it gained prominence and supposedly we are still winning as long as the flame still burns basically. Callisto yin when the city was falling took the flame with her and now on top of the flame being in the city plaza it’s also contained within the ghosts of all firebreak titans.
Additionally saint-14 is suspected to be either a member of or inspiration for the firebreak order owing to his crusades beyond the wall which closely followed the firebreak orders. Though saint-14 has his won titan order called the order of the lost saint.
Addict ally radegast and jagi were firebreak titans And we know at six fronts they lead a Charge to reclaim six miles of land from the fallen. Jagi and six others kept going and stopped somewhere near the Caspian Sea