Terra ad Finem
Grand Admiral Jakob Theisman
Official leader of the expedition
Jakob Theisman is a decorated naval officer who has served in hundreds of engagements in his 48 years of service. He has twice received the Starburst for Extreme Heroism (the highest honor the Navy bestows), and is considered one of the most capable grand admirals in the Imperium. The Emperor specifically chose him to lead the expedition; although Theisman was not particularly fond of the idea, he was eventually persuaded to do so willingly.
Grand Admiral Theisman is a no-nonsense man, and the perfect person to prevent all-out war between the various political factions aboard the Fleet.