Hellsing: Volume 2 is the second volume in the Hellsing manga series. It was originally released in Japan in December of 1999 and released in English on March 1, 2004.
While Sir Integra holds a Round Table conference to report her findings regarding the current wave of vampire attacks, vampire brothers Jan and Luke Valentine launch a covert sneak attack on the Hellsing compound with the help of a ghoul army outfitted with military gear and small arms. Almost all of the Hellsing soldiers are killed in the process and turned into ghouls before Alucard, Seras and Walter C. Dornez (who shows why he was once known as the "Angel of Death") are able to turn the tide. Jan reveals the name of the group responsible for the attack as Millennium, and Integra hints to Walter that surviving Nazi officials could have been responsible for the attack. In a bid to increase manpower following the devastating attack on Hellsing headquarters, Walter recruits the mercenary group known as Wild Geese and integrates them into Hellsing's security forces. Integra receives information from Enrico Maxwell, the fanatical leader of Iscariot, that confirms her suspicions of Millennium's origins.