I’m putting together a small “core shelf” of naval history and I’m trying to pick the one book that every enthusiast should read at least once. I’m not looking for a super-niche title—more like something that gives you lasting context: why fleets are built the way they are, how commanders think at sea, and what actually decides battles beyond the highlight reels.
I’ve read a couple pop-history overviews and some YouTube-driven stuff, but I want a serious recommendation that’s still readable (not a dry academic brick). Era doesn’t matter: Age of Sail, WWI/WWII, Cold War, modern. If you had to choose one “must read,” what would it be and why?