The Three Mandalorian Factions
The Mandalorian Excision was the Galactic Republic's name for the brief, ugly, brutal war that took place in 738 BBY. The word "Excision" also accurately described the nature of that war.
By then, after thousands of years of warfare and continual decline, the Mandalorians had long since lost any desire to become enemies of the Galactic Republic. They had not done anything hostile toward the Galactic Republic.
Mandalore lay near the Hydian Way, one of the largest hyperspace routes in the Milky Way Galaxy. With the Mandalorians' resurgence, they began collecting transit taxes along the section of the Hydian Way within their own territory.
In fact, the Galactic Republic itself did the same, and the later Trade Federation collected transit taxes throughout the Outer Rim Territories for a long time as well.
But the Galactic Republic, having already resolved to deal with the Mandalorian problem, used this as an excuse to brazenly dispatch a fleet to attack Mandalore!
First, the Mandalorians had never imagined that the Galactic Republic would suddenly launch an undeclared war. Second, they no longer had the strength to resist the Galactic Republic, whose military was at its peak after the end of the Sith Wars. This could not even be called a war. It was merely a one-sided massacre.
Mandalore suffered a devastating Orbital Bombardment by the Republic fleet. Most of the planet's once-temperate surface became a pale crystallized desert, and the surviving Mandalorians had no choice but to huddle within a handful of remaining settlements, barely clinging to life.
After that slaughter, Mandalore was completely disarmed and remained under direct Galactic Republic occupation for decades.
After the massacre of the Mandalorian Excision, many Mandalorians had their spirit utterly crushed. Though they still hated the Galactic Republic for launching an unprovoked slaughter,