Have coastal forts with rotating turrets as their main armament fought in battle?
Short answerPossible examples include Crimean War fortifications and engagements involving pop-up guns, depending on what counts as a rotating turret.
NotesCrimean War fortifications offer possible examples, depending on what counts as a rotating turret. Engagements involving pop-up guns are also tentatively recalled. No particular battery or battle is identified, and the distinction between rotating and retractable mountings remains unresolved.