Midnight: 1969: The Lunar Front
by John M. Burt 
By the year 1969, the entire world has fallen to the Third Reich. The last bastion of American freedom is a Lunar base called Camp Truman, led by Dave Clark, the former mystery-man called Midnight. But it’s only a matter of time before the Nazis drop an atomic bomb onto the base, killing all three hundred men, women, and children on the Moon. Could a group of visitors from the future offer hope and an alternative fate for this embattled Lunar colony?