From Credits page of book:
It is the middle of the 20th Century, a time of change, a time of boundless science and the power of the atom.
The last Great War has been fought, and lost – by everyone – as mad technology and insane despotism worked hand in hand to destroy the world that was and to bring about the world that is.
Now, in the ruins of the old world, a new world must be forged in a land of atomic abominations, lawlessness, loose morals, fast cars and Rock N’ Roll.
This is the world of ’45!