Sons and Daughters of Reach

The Sons and Daughters of Reach, (abbrev. SADOR), are a human-separatist group which began to take major action around 2574, although how long they have been active is unknown. Their first direct attack against the UNSC was planting a disease among the Delta Company SPARTAN-IIIs, resulting in major incapacitation throughout their large numbers. Their leader, Nikolai Fedoseev, easily eludes the UNSC's attempts to find and stop him.