The Eternity Soldier

The war began six hundred years after she died...and five years before she came back.

In the far-flung future, an unknown alien species appears, determined to wipe out humanity. The Solar Union, in making a last-ditch effort to save billions of lives on dozens of different planets, retrieves the soldiers they need from those who've died over the past six hundred years.

Lilah is no soldier. In fact, she hates the concept of war. But it's either fight, or go back into storage and never wake up ...