Battle of Delambre
From Halopedia, the Halo wiki
At the conclusion of the Rainforest Wars, certain dissenting groups arose within the Frieden movement that promoted reformist ideals. The Neo-Friedenists were formed in 2162, challenging their original founders and expressing their wish to negotiate a peace treaty with the United Nations and end the hostilities between them in hopes of retaining some degree of power.
As forces of the newly-formed United Nations Space Command approached the Delambre crater, the Neo-Friedenists took up arms against the conservative side of the Frieden movement. It is presumed that the Neo-Friedenists won the brief engagement, as they later attempted to discuss a peace treaty with the UNSC.
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