The Forever WarThe Forever War

The Earth's leaders have drawn a line in the interstellar sand, despite the fact that the fierce alien enemy they would oppose is inscrutable, unconquerable, and very far away.
Humans first bumped heads with the Taurans when we began using collapsars to travel the stars. Although the collapsars provide nearly instantaneous travel across vast distances, the relativistic speeds associated with the process means that time passes slower for those aboard ship. For William Mandella, a physics student drafted as a soldier, that means more than 27 years will have passed between his first encounter with the Taurans and his homecoming, though he himself will have aged only a year. When Mandella finds that he can't adjust to Earth after being gone so long from home, he reenlists, only to find himself shuttled endlessly from battle to battle as the centuries pass.