Operation: Hellfire

Operation: Hellfire was a military operation that ended the Sith-Terran Wars. Headed by Admiral Galon Krysto, the New Sith Empire brutal crushed all opposition to their rule. It started with the destruction of Terran and the death of Queen Alexis, and the brutal reprisal and mass arrest of all opposition to the Sith.

Background
The Terrans launched a steadfast resistance to the New Sith Empire, that spilled and spiraled into open rebellion after the pro-imperial Governor was removed and the monarch was restored. This sparked the Sith-Terran wars, in which the New Sith Empire launched an invasion of Terran.

Fearing that the war can engulf the so-called "Tenderbox planets*", (*which were a series of Former First Order, and Resistance aligned worlds that opposed Sith rule. As the name suggested on these worlds tensions were boiling waiting for something to spark the flames of war.) Empress Rey Papaltine and Darth Imperius wanted a more peaceful solution, but Darth Nox wanted to crush the rebellion before it spread. Eventually Rey related and allowed Admiral Galon to destroy Terran before they could contact and unite with the other worlds encouraging them to rebel. Galon destroyed his former homeworld using his star destroyer "Hellfire".

Galon also personally lead brutal and ruthless reprisals on rebel worlds, and had opposition leaders arrested and executed.