Valkyrie: Expeditionary Force, Book 9 (Unabridged)

After saving the world many times, the Merry Band of Pirates have accepted the inevitable: Earth is doomed.

All they can do is try to bring a few thousand people to safety, before vicious aliens arrive to destroy humanity's homeworld.

No.

There is one other thing they can do: hit the enemy so hard that the aliens will regret they ever heard of humans.