The Dalek command battle fleet during the Second Dalek War consisted of the ultimate flagship, an Exterminator-class vessel by the name of the Exterminator under the command of the Dalek Inquisitor General. The Tenth Doctor was accidentally taken back to the war by the TARDIS and helped to destroy the Exterminator and its provisions. The loss of such a powerful ship put a massive dent in the Dalek war machine and their fleet was pushed right back by the Earth Empire. (PROSE: Prisoner of the Daleks)