[2] On 1 October 1911, after the outbreak of the Italo-Turkish War, Basra, together with her sister ships Samsun, Yarhisar and Basra, became part of an Ottoman fleet directed to defend the Dardanelles (consisting, in addition to them, of the battleships Barbaros Hayreddin, Turgut Reis, the ironclad Mesudiye and the torpedo boat Demirhisar), but the following day all ships returned to Istanbul to make necessary repairs and retrieve supplies.

[7] During the First Balkan War, on 12 December 1912 Taşoz and Basra went on patrol in the waters of the Dardanelles, intending to ambush Greek destroyers, but had to return due to trouble with their boilers.

[3] On the morning of 29 October, the Taşoz, together with her sister Samsun and the line cruiser Yavuz Sultan Selim, took part in an attack on the Russian harbour of Sevastopol,[10] which was carried out without a formal declaration of war.

[2][1] On 1 April 1915, a group of Ottoman ships, consisting of the cruisers Mecidiye and Hamidiye, and the destroyers Taşoz, Samsun, Muâvenet-i Milliye and Yâdigâr-ı Millet left the Bosporus, with the task of attacking Odessa.

[12] The long-range cover team for this operation consisted of the cruisers Yavuz Sultan Selim and Midilli, patrolling the waters west of the Crimean Peninsula.

[16] On 28 October 1916, Taşoz transported a group of German officers to Constanta to supervise the establishment of a naval base for Central Power ships there.

[17] On 22 January 1918, Taşoz and Numûne-i Hamiyet and the torpedo boat Akhisar were based in Çanakkale, tasked with protecting the damaged battlecruiser Yavuz Sultan Selim from attack by enemy submarines.

[2] After the end of the war, on 29 October 1923, Taşoz was incorporated into the newly formed Turkish Navy[20] Between 1924 and 1925, the vessel underwent an overhaul at Deniz Fabrikaları in Istanbul and after its completion, entered active service.