Restoration Empire

The Restoration Empire was the incarnation of the Dalek Empire which rose from the ashes of the Imperial Dalek faction following the close of the Imperial-Renegade Dalek Civil War. (PROSE: The Restoration Empire)

Origin
During the Imperial-Renegade Dalek Civil War (PROSE: The Restoration Empire, TV: Remembrance of the Daleks) the Dalek Supreme who would later become the new Dalek Emperor served on the Dalek Council. After Davros fled the war, he exterminated all other members of the council and appointed himself the new Dalek Emperor. Modelling himself on a former emperor, he built himself a gold casing and augmented his brain capacity.

From this position, he sought to restore the Dalek Empire to its former glory through a new hierarchy of Dalek command and a new system of production. He restored Skaro (PROSE: The Restoration Empire) after it was destroyed by the Seventh Doctor (TV: Remembrance of the Daleks) and overhauled the standard Dalek hierarchy, bringing back Silver Daleks as drones (PROSE: The Restoration Empire) instead of the white-and-gold livery favoured by Davros' Empire. (TV: Remembrance of the Daleks) Also among the Emperor's forces was the Dalek Prime Strategist, a unit who claimed to be older than the Emperor. (COMIC: Defender of the Daleks)

Shift in the timelines
When the Tenth Doctor poisoned the Kotturuh in the Dark Times, (PROSE: The Knight, The Fool and The Dead) he caused fluctuations in time, (PROSE: The Guide to the Dark Times) resulting in the Restoration Empire never fighting the Last Great Time War. (COMIC: Defender of the Daleks) The Emperor received a message from an ancient Dalek drone, which he deduced was a survivor of a Time Squad that had yet to be sent back in time. From the message, the Emperor concluded that history was under attack, which the Dalek Empire was vulnerable to, and that the Doctor was involved, but still needed more information. He decided the necessary information could be found somewhere like the Archive of Islos. (PROSE: The Last Message)

He personally led the Daleks’ invasion of Islos. However, the Chief Archivian made a deal for the rescue of the Archive, promising their rescuer the Daleks. When the Emperor entered the Archive along with the Strategist and Executioner, they found it empty. The Chief Archivian informed them of its deal as an Entity emerged from a portal. (WC: The Archive of Islos) The Daleks retreated from Islos and returned to Skaro, pursued by the Entity. It attacked Skaro and the Daleks’ firepower proved ineffective, forcing the Emperor to order an evacuation. The Strategist advised that the evacuation was failing and they should abandon the planet. The realisation that the home planet had been lost caused the Emperor to fall silent, forcing the Strategist to coordinate the retreat. After the Strategist suggested reinforcements, he decreed that the Sentinel of the Fifth Galaxy was required. The Strategist was sent to meet the Sentinel and awaken a dormant army of 10,000 Daleks however the Entity compromised the army and took it over. As the Executioner led Dalek forces against the army, the Strategist advised the Emperor to withdraw again as they could not sustain further losses and defended its failure. (WC: The Sentinel of the Fifth Galaxy)

The invasion of the Archive of Islos unleashed the Hond. (PROSE: The Restoration Empire) With Skaro itself in danger of falling to the Hond, the Prime Strategist suggested the Doctor be used against the Hond. The Tenth Doctor was captured by the Daleks and brought before the Emperor. He recognised the Empire he was interacting with, who had never fought in the Last Great Time War, as "a paradox". The Emperor convinced him to help them and sent him to meet the Strategist. Together they discovered a way to pacify the Hond. The Doctor escaped, with the aid of the Thirteenth Doctor, after which the Strategist met the furious Emperor. The Strategist defended its failure and suggested the Daleks could use other Doctors, such as the Eighth Doctor. (COMIC: Defender of the Daleks)

Eventually the Emperor sent a Time Squad to rectify the temporal fluctuations to the Daleks’ benefit. (PROSE: The Guide to the Dark Times)