Commissioned on April 18, 2365, the Unrelenting Storms was placed on hold for deployment for nearly forty years due to a lack of experienced crew to staff her. The only time she was widely recognized was three years before the start of the Human-Covenant War when her entire crew was killed due to a radiation leakage.
Captained by Viko 'Krasov during their war against Humanity, Unrelenting Storms and her crew was largely assigned to weed out smaller human settlements, such as those used by the Insurrection, enough to warrant a deep hatred for those few who survived the assault carrier and her wrath.
Late into the Human-Covenant War, Unrelenting Storms and her fleet was re-assigned to ambushed a human battlegroup as they were the closest forces available. Taking her position, the Unrelenting Storms engaged the UNSC Mithridates and her escorts. Destroying the majority of the ships present, 'Krasov retreated as an act of mercy and allowed the human survives to spread the word of him and his ship.