Reading Japanese planning documents as public positions

Many Japanese officers involved in Operation MI died, leaving historians to reconstruct intentions from incomplete documents and later accounts. The source-reading method distinguishes a personal view, a private face shown to trusted people, and a public face intended for a wider audience. Highly formal wording can signal that a document was written defensively because others might read it or use it against the author. Applied to Midway, this means official claims that the American fleet was expected during the landing may have been pro forma rather than a literal record of private expectations. Tone, audience, omissions, and competing testimony all matter when testing one source against a wider record.