"The Forever War" is a science fiction novel written by Joe Haldeman, first published in 1974. The story follows William Mandella, a soldier drafted into an interstellar conflict against an alien species known as the Taurans. Due to the effects of time dilation, Mandella experiences the war over centuries, while only a few years pass for him. The novel explores themes of the futility of war, the impact of technology on society, and the alienation soldiers feel upon returning home. It serves as an allegory for the Vietnam War, reflecting Haldeman's own experiences as a veteran and the challenges faced by returning soldiers.