Military

Military science fiction looks at combat in future locations (space, another planet), against a range of opponents (modified humans, aliens, machines), with futuristic, high-tech weaponry (including genetically modified soldiers). While some military science fiction asks "how fast can we blast the bugs?" (Robert Heinlein's Starship Troopers), many authors use this subgenre to address anti-war themes. David Drake's Hammer's Slammers series explores both the heroism and the carnage of warfare.