Demons Run

Demon's Run was an asteroid used as a military base by Madame Kovarian, the Church's Anglican Regiment and the Headless monks. Amy Pond was held prisoner and gave birth to her daughter here. It was later the site of the Battle of Demon's Run, in which the Doctor attempted to rescue Amy and her baby.

History
Some time after Amy's honeymoon onboard the Doctor's TARDIS, she was captured by Kovarian's alliance and replaced by a Ganger so perfectly synced to her neither the Doctor nor Amy's husband Rory would notice.

As far as Amy knew, she was continuing her adventures with the Doctor and Rory. In reality, Amy, pregnant was taken to Demon's Run in the 52nd century. The Doctor realised what had happened and terminated her Ganger. Amy woke up on Demon's Run just before giving birth to her daughter, Melody Pond. (DW: The Rebel Flesh)

The Doctor assemble an army of allies from many races and time periods, while Rory attacked the Twelfth Cyber Legion to intimidate Amy's captors. A month after Amy woke, Demon's Run was attacked by an army of Silurians and Judoon led by Sontaran Commander Strax. A squad of spitfires destroyed Demons Run's communications array so the alliance wouldn't be able to call for help. The forces under Colonel Manton surrendered, but this was a trap for the Doctor; after most of his forces had withdrawn, the holding forces were slaughtered by the Headless Monks. Only the Doctor and his friends survived and Melody Pond had been spirited away by Madame Kovarian.

There was a saying that went with Demon's Run: "Demons run when a good man goes to war." There was also a poem:


 * Demon's run when a good man goes to war;
 * Night will fall and drown the sun
 * When a good man goes to war.
 * Friendship dies and true love lies,
 * Night will fall and the dark will rise,
 * When a good man goes to war,
 * Demon's run, but count the cost,
 * The battle's won, but the child is lost,
 * When a good man goes to war.


 * (DW: A Good Man Goes to War)