Dalek Imperial Army

In light of the repeated failures of the New Dalek Paradigm, the Prime Minister of the Daleks had the Red Drones of the Dalek Imperial Army replaced by the bronze Daleks associated with the Last Great Time War so as to provoke the most fear across the universe. The larger Red Drones became an officer class, albeit one kept safely away from the front line.

Historians who studied the Dalek race suspected that, upon regaining their knowledge of the Doctor, the New Dalek Paradigm had deployed the totality of the Dalek Imperial Army to fight in the Siege of Trenzalore to prevent the return of the Time Lords and as a consequence, its destruction at the hands of Eleventh Doctor had potentially been the final defeat of the Daleks. (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe)