Did the war in China change Japanese naval-air doctrine?
Short answerIt mostly reinforced existing doctrine, but the campaign's unequal conditions meant that success did not reveal how the system would perform against a peer navy.
NotesThe campaign largely confirmed Japanese expectations because high-performance aircraft consistently outmatched the available Chinese opposition. Japanese carrier forces could choose when and where to strike, often without warning, and usually enjoyed numerical superiority. Those conditions made the campaign a poor peer-level test of doctrine. A Chinese submarine force might have threatened the carriers and disrupted this freedom of action.