To provide background and physical description and all the rest is of course vital to fiction, but vital only insofar as such detail is in the service of a richly imagined story, rather than in the service of good botany or good philosophy or good geography.

With no draft, the only people who went to war were those who wanted to, or at least those who wanted to join the military.

Pinkville was called Pinkville because in the military maps, it was shaded a bright kind of shimmering pink, which signified what was called on the maps a 'built up' area, which was extremely misleading - 'built up' only meant there were little villages and it wasn't just desolate paddy land or unpopulated.

Fiction, maybe art in general, is a tentative, uncertain enterprise; it's not science, it's an exploration, but you never find much in the way of answers.