Robert A. Heinlein
A weirdly credible adventure revolving around moral philosophy and entomology, told in the first person. The hero, a youth in his late teens, a citizen of Terra, one of the member governments of the Federation of Planets, enlists as an interstellar soldier. His adventures not only include fantastic journeys through space, combats with horrifying insect enemies, and a range of bewildering maneuvers, they also extend to the battle front of his mind in which ultimately he justifies the moral validity of war as an instinctual preservation of the species. Somewhat pretentious in style and proposed scope, often slightly confusing to the non-aficionado, this should, nevertheless, find readers among the devotees of Robert Heinlein's impressively long list of science fiction titles.