 The ship saw extensive action during the First Balkan War in 1912–1913, including the battles of Elli and Lemnos in December 1912 and January 1913, respectively.During the latter engagement, she was badly damaged by a Greek shell and forced to withdraw.Following the outbreak of World War I in 1914, "Mesudiye" was moored at Nara to protect the minefields that blocked the entrance to the Dardanelles.