Doctor Who - Past Doctor Adventures - 39 - Bunker Soldiers (1st Doctor)

'There are many beasts and monsters in the universe, it is true. But the worst of them is Man.'

A terrifying alien army is sweeping across the landscape, decimating
towns and subjugating everyone and everything in its path. With their
astute military tactics and advanced weaponry, the invaders seem
unstoppable.

But this is no distant star, no alternate timeline. Trapped in a
frightened city, the Doctor and his companions discover that this is
Earth history, and they are powerless to intervene. The impending
slaughter of thousands is a matter of grim historical fact.

Not everyone within the city is prepared to accept their fate.
Desperate people embark upon desperate courses of action. They may even
succeed.

For, deep beneath the city, something truly alien is stirring...

Featuring the First Doctor, Steven and Dodo, this adventure takes place between the TV stories The Massacre and The Ark.