Which area of naval history is most necessary for contemporary naval strategy?
Short answerThe 1920s and 1930s, with the qualification that this is also a personal specialist interest.
NotesAsked to choose one area of naval history most necessary for contemporary strategy, the answer is the 1920s and 1930s. The recommendation is immediately qualified as a personal passion area. This is a specialist's priority rather than a neutral ranking demonstrated within the brief exchange, and no further case is developed here.