The Forever War
"The Forever War" is popularly thought to be a direct reply to Hugo award-winning future war novel "Starship Troopers" by Robert Heinlein. While Haldeman has stated that "The Forever War" is actually a result of his experiences in the Vietnam War, he has admitted to being influenced by Heinlein's work. Haldeman said that he disagreed with "Starship Troopers" because it "glorifies war" but added that "it's a very well-crafted novel and I believe Heinlein was honest with it".