A contemporary or near-future book is much harder because you can't fake the facts. There are people alive who know much more than you do about the subject. You have to really have your research together - and of course no one can know everything about a topic.
Steven PressfieldWhen a warrior fights not for himself, but for his brothers, when his most passionately sought goal is neither glory nor his own life's preservation, but to spend his substance for them, his comrades, not to abandon them, not to prove unworthy of them, then his heart truly has achieved contempt for death, and with that he transcends himself and his actions touch the sublime. That is why the true warrior cannot speak of battle save to his brothers who have been there with him. The truth is too holy, too sacred, for words." -Suicide (Gates of Fire)
Steven PressfieldIn the hierarchy, the artist faces outward. Meeting someone new he asks himself, What can this person do for me? How can this person advance my standing? In the hierarchy, the artist looks up and looks down. The one place he can't look is that place he must: within.
Steven PressfieldWhen a novelist or screenwriter is looking for a subject, the element he's seeking is conflict. Conflict makes drama. Conflict produces great characters and memorable scenes. So war is a natural topic.
Steven Pressfield