Doctor Who: 10 Easter Eggs, In-Jokes And References In The Magician's Apprentice

10. The Kaled-Thal War

The episode opens in spectacular fashion as we land on a misty battlefield where a soldier tries to shoot down a biplane with nothing more than a bow and arrow.

Though we are not told where we are at first, some fans may have recognised it from the off as the battlefield is extremely reminiscent of the one we see in the opening of Genesis Of The Daleks. 

While the Doctor later explains the significance of the war being the impetus for Davros' creation of the Daleks, it is not explicitly stated on screen that the war in question is the Kaled-Thal War, a thousand-year conflict between the two groups of people native to the planet Skaro - the length of the war degenerating technology to the likes of bows and arrows. 

We saw the outcome of the war in the Daleks' introductory story, er, The Daleks in which Skaro has been left a lifeless husk.