Genre & subgenre
Military science fiction
A subgenre centered on armed conflict in a science-fictional setting, focused on soldiers, tactics, and the machinery of war.
Military science fiction in fiction: 3 works
Its powered-armor infantry and boot-camp-to-battlefield arc define military science fiction.
Its interstellar soldiers and combat against an alien foe define the subgenre.
Children are trained in Battle School to command humanity's war against an alien enemy.