The 1974 novel of a young man conscripted into a military task force in a war against an alien species named the Taurans. Through many battles, the man rises up the ranks of the military but travelling through space has time-warping effects, causing him to age normally but Earth to spin centuries.
The planet undergoes many changes, including the melding into one homogenous race, the elimination of heterosexuality, and the speaking of a new language. At the same time, he tries to remain connected to his true love, a fellow (and female) soldier who also uses space-time to slow down her aging so she can be with him.
More to come!