Why surviving Japanese documents need archival context

Destruction of Japanese records before the occupation left gaps in the evidence for wartime decisions and research priorities. Postwar descriptions of naval aviation doctrine can therefore be difficult to check against contemporary documents. Operations and ship design offer another way to test what a navy actually expected its forces to do. A newly discovered document also needs context: related papers, personal archives, and earlier drafts can reveal how a decision developed. Large British and American collections remain useful even though they preserve only a fraction of the original paperwork, because surviving indexes and associated records help reconstruct that context.