In the other naval theatres, there were no decisive pitched battles. In the Black Sea, Russian and Turkish battleships skirmished, but nothing more. In the Baltic Sea, action was largely limited to convoy raiding and the laying of defensive minefields. The Adriatic was in a sense the mirror of the North Sea: the Austro-Hungarian dreadnought fleet was confined to the Adriatic by the British and French blockade but bombarded the Italians on several occasions, notably at Ancona in 1915. And in the Mediterranean, the most important use of battleships was in support of the amphibious assault at Gallipoli.