United Rebel Front
From Halopedia, the Halo wiki
The United Rebel Front is a complex, well organized faction of humans devoted to complete liberation from the influence of the Colonial Administration Authority and its United Nations Space Command. It is led by three leaders, one of which was General Howard Graves.
Resources
The United Rebel front has a highly organized intelligence division, and a far flung network of facilities, comprised of a network of different rebel movements, such as the Eridanus Rebels. They commanded facilities such as Eridanus Secundus, Camp New Hope on planet Victoria, and Station Jefferson.
They also had a number of arms, ranging from military grade MAKO Drones to FENRIS Nuclear Warheads and Archer Missiles. They used Parabola-class Freighters such as the Laden, to ferry equipment and resources from planet systems to their base. They even had a destroyer, the Origami.
History
The United Rebel Front claims to have a number of people who suffer from Boren Syndrome, and in 2531, they were willing to trade some of their nukes for treatment of their people. Per Halo: Ghosts of Onyx, The UNSC sent in five Spartans to take the nukes and kill any rebel leaders by force- as it turns out, the entire plan was a trap engineered by Graves to capture the Spartans. They were unsuccessful in that attempt.