Black Rebellion

The Black Rebellion was a signifcant Rebellion in the history of the Code Geass universe. It changed the minds of Britannians and greatly affected the world in many ways.

Beginning
The Black Rebellion was "started" roughly in 2004 a.t.b. when Lelouch Vi Britannia declared that he would destroy the Holy Empire of Britannia. Thirteen years later he would have a chance at this goal with the meeting of C.C. who would give him the power of Geass. With it he would defeat Britannia at the Skirmish in Shinjuku Ghetto. After the battle he would reconnect with the Rebels led by a man named Ohgi. However he would meet them under the Mask of Zero, the "Mastermind" behind the skirmish, and with that, the Rebellion began.

Phenomenon
The Rebels led by Zero would attack Britannia openly for another few weeks until the Japanese Liberation Front Hotel Incident where he would reveal the Black Knights, a group of men and women who would fight for the weak, and for justice against the strong. To the Japanese, Zero was a hero; their "Knight in Shining Armor" with the Black Knights open fighting against Britannia and local community problems (Refrain Drug pin Bust). The Japanese and other Area citizens think differently about the power Britannia had. Britannia however still stayed adamantly arrogant against the Black Knight's Potential. This was up until the Saitama Ghetto Ambush and Battle of Narita where the Black Knights made two attempts on Cornelia Li Britannia's life and destroyed more than 20 Knightmare Frames and Britannian soldiers. the Black Knights were then seen as a major threat by Britannian higher ups and became their main target, besides the Japan Liberation Front.

The Rebellion
After JLFs destruction and attempts on Lancelot's Theft along with Schneizel El Britannia's life. The Black Knights became a "small threat" with Rebel Pockets joining them their numbers increased. But they took no actions to truly liberate Japan up until the Special Administrative Zone Massacre where many people were outraged and openly rebelled against Britannian Rule and attacked, though ultimately they failed, they had sent a message to Britannia that both suprised the Empire and the rest of the world.

Legacy
Britannia now saw the Black Knights as a very dangerous, very real threat and thus began attempts to destroy them. Many things were done to attempt to prevent anything similar to the such catastrophes from happening again  such as building better Knightmare Frames, cleaning up the remaining Rebels, letting Knights of Rounds watch over the area and use their skill to defeat Knightmare novices, along with better trained soldiers and stricter watch. However these would prove to not fully solve the problems of the first Rebellion, as Zero would change tactics and exploit other flaws in the military leading to the Britannian UFN/Black Knight War.