Carter-A259 was born on the outer colony world of Biko in 2520, and was subsequently made an orphan during the Battle of Biko in 2526. At the age of eleven in 2531, Carter was conscripted into Spartan-III Alpha Company and quickly stood out from the rest of the Alpha Company candidates. Upon graduating from Spartan training in 2536, Carter was one of the few Spartan-IIIs deemed too valuable to take part in the normal Spartan-III suicide missions. Instead, Carter was made commander of the newly formed Noble Team, taking command of a fireteam consisting of other exceptional Spartan-IIIs. In 2552, Carter, along with Noble Team, were part of the lead effort to stop the Covenant infiltration of Reach. Though Noble Team was largely successful in their missions, in particular the destruction of the Covenant supercarrier Long Night of Solace, Reach fell to the Covenant, and Carter ultimately gave his life defending Emile-A239 and SPARTAN-B312 on their mission to deliver Cortana to the Pillar of Autumn.