A combined force unit of the Caspian Defence Force, comprising vessels of the Caspian, Krittish, and Yari navies. The First Fleet was commissioned in the second year of The Crest, and its sponsor was Her Honorable Justice Miala Tranault. The fleet's nickname was the Crown Winds Fleet, spending most of its time in and around the Caspian system proper. At the close of the Imperial War of Aggression, the remnants of the First Fleet were repaired and dispersed into the Home Fleet, Rimward Frontier Fleet, and Coreward Frontier Fleet.