The office of Captain-General is one of the most powerful military appointments in the Imperium. It confers full responsibility for the overall defence of the Sol System, Terra, the Imperial Palace and, ultimately, the Golden Throne and the Emperor himself. Many claim that Trajann Valoris is the greatest warrior to hold the title of Captain-General since the Emperor strode the stars, having proven himself to be dynamic and effective; qualities that make him ideally suite to lead in this age of unprecedented aggression.