The "Warhammer" is an honourific title bestowed on those who achieve high scores in physical exams in Star Command. It is an incredible achievement and few ever make it. The title refers to the old weapon of Old Earth, used to crush opponents, which is what those who are given this title are supposed to be able to do.
In 314AE Ejjina Mexonber-Quad was given a "Warhammer" t-shirt, which cannot be brought or made in an Arcade. Only 6 people out of the etire Camp Berlinsberg were awarded the title, onlu 1.5% of those who had made it to the end of training.