The Eternity Brigade by Stephen Goldin
Series: Serious Tales of Tomorrow.
Approx. 72,910 words.
Published on May 1, 2010 by
Hawker was a good soldier--so good, in fact, that the Army asked him and his buddies to sign on for an extended hitch. What they couldn't know was that the extension would last forever. Century after century,Hawker and his comrades were resurrected to fight on alien planets. But one goal remained in Hawker's mind: Somehow there had to be a way out of the loop. And he was determined to find it.