Sinclair Cerebrese was a Vice Admiral in the Free Planets Alliance's Fleet. Considered to be a expert of logistics, he organized and was responsible for supplying the Alliance forces in the Van-Fleet Starzone and likely in the entirety of the Alliance side of the Iserlohn Corridor. During the Battle of Van-Fleet, which encompassed many smaller battles and skirmishes, Vice Admiral Cerebrese was in command of an Alliance rear supply base. During an Imperial ground assault on the base, he was captured by Imperial Commodore Reinhard von Müsel and was taken as a prisoner of war.