Rebel

Rebels are any group that wants to break away from a primary government. "Rebel" may refer to the following:

In the UNSC
 * Frieden Rebels- A secessionist faction that fought against the UN in the Interplanetary War.


 * Koslovic Rebels- The neo-Communist faction that fought against the UN in the Interplanetary War.


 * United Rebel Front- The larger faction of human rebels united against the UNSC government.
 * Eridanus Rebels- The faction of human rebels in the Eridanus System.
 * Secessionist Union- A rebel union on Harvest led by Jerald Mulkey Ander.
 * Insurrectionists- A rebel group on Tribute, possibly connected to the Secessionist Union.
 * Unknown Rebel Group- An unknown rebel group that resides on Harvest, possibly connected to the the Insurrectionists.

In the Covenant
 * The Heretics- The breakaway faction that follows Sesa 'Refumee and is against the Great Journey.
 * Covenant Separatists- The Elite led faction after they learned the truth about the Halos.
 * The Grunt Rebellion- A Grunt uprising against the rest of the Covenant which led to the creation of an Arbiter.