Holding the rank of Captain around 1902 PD, he served under Commodore Robert Dominick in the Silesian Confederacy, evaluating the new "crippler" technology. He did not trust the enigmatic arms dealer known as Charles, and was displeased with the way his ship preyed on Manticoran commerce shipping. Forerunner tried to flee the system, but IANS Neue Bayern intercepted and threatened to destroy the ship. Vaccares then surrendered his vessel. (HHA4.2: WOS)