It's been quite some time now I'd wanted to try and write a war sci-fi novel. My idea is to stage an intergalactic war and to follow the characters' adventures throughout it, with a sub-plot featuring the research for the one who plotted and was responsible for the breaking out of the war. I'd like for it to be a plausible war in a plausible universe, not like Star Wars. For the first chapter I'd like to intertwine the story of a young operative of the Special Operations sent on a mission to disable a mass destruction weapon, with the story of a high school student who gets caught in the midst of the operation for the invasion of the planet on which the war first breaks out. I've already written the Special Ops agent's part, but I'm not sure how to write the high school student's part: not sure how should I render the idea her world is still at peace but on the verge of being war-torn. How should I imagine the life of a fifteen-year-old in a country which has been occupied by a foreign power and in which a rebellion is about to occur?