How would you specialize battleships for different eras?
Short answerFor the First World War, optimize for the battle line; for the Second World War, design around the wider fleet role.
NotesA First World War battleship would be optimized for battle-line fighting because that was the decisive expected employment. A Second World War design would be shaped more broadly around fleet operations and supporting roles. Designers should begin with doctrine and likely war conditions before choosing machinery, protection, and armament. The required employment determines what specialization is useful.