Dalek invasion of the galaxy

Human historians in the post-Time War universe, following the Siege of Trenzalore, understood that a full-scale Dalek invasion of the galaxy of Mutter's Spiral was launched after the failure of the Exxilon initiative.

The invasion begins
Following the events on Exxilon, the Dalek Supreme Council decided that the time for discretion had ended. The galaxy was still reeling from the Daleks' space plague and any further delay would give them time to recover. The invasion was launched and only the continued preparedness of the Combined Galactic Resistance kept them from overrunning the whole of inhabited space in the first assault. The Daleks scoured the life from whole planets. Hospital ships treating plague victims were converted into troop carriers. Conscription was introduced on a thousand worlds. Bitter enemies buried ancient rivalries to unite against the Daleks. The once great empire of Draconia splintered and fell before the Dalek onslaught. Humanity endured, but every day more ground was given and more worlds fell to the Daleks. (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe)