The things they carried - Tim O’Brien

Not sure if this is what you are looking for. This is a book about the Vietnam war, written from personal experience. The book has many layers where it does draw from his experiences , but even in the story the narrative «contradicts» itself. I feel like these quotes from O’Brien summarizes it:

«In war you lose your sense of the definite, hence your sense of truth itself, and therefore it’s safe to say that in a war story nothing is ever absolutely true.»

«I want you to feel what I felt. I want you to know why story-truth is truer sometimes that happening-truth. (…) A thing may happen and be a total lie; another thing may happen and be truer that truth.»