Prologue - In the Beginning

What should have been a normal recon mission has turned the world of Bunker 6 upside down. Now they know five generations of safety have made them complacent. But the Nazis are on the move again, slowly finding one bunker at a time and destroying them. Now the bunker D calls home is under Nazi threat and it's only a matter of time before they'll be searched out and captured.
WIll America survive this latest attack?

Book 1 of the Evolution series