20th January 1918
Asiatic and Egyptian Theatres
Samaria again bombed.
Troops of King of Hejaz active.
Naval and Overseas Operations
Naval action at entrance to Dardanelles: German cruiser "Breslau" and British monitor "Raglan" sunk and "Goeben" damaged.
H.M.S. "Mechanician" torpedoed in English Channel.
Two German destroyers mined in North Sea.
Political, etc.
General strike in Austria-Hungary wanes, as people return to work. However, demonstrations continue in Bohemia and Moravia, fueled by rising Czech nationalism.
Ship Losses:
SMS A73 (Kaiserliche Marine) The A-class torpedo boat struck a mine and sank in the North Sea off Jutland, Denmark with the loss of 40 of her 57 crew.
SMS A77 (Kaiserliche Marine) The A-class torpedo boat struck a mine and sank in the North Sea off Jutland with the loss of all 33 crew.
Faustina B. (Italy) The sailing vessel was sunk in the Mediterranean east of Sardinia by
SM UC-67 ( Kaiserliche Marine).
Hirondelle (France) The sailing vessel was sunk in the English Channel north of Le Tréport, Seine-Maritime by
SM U-55 ( Kaiserliche Marine).
HMS M28 (Royal Navy) The M15-class monitor was shelled and sunk by
Midilli and
Yavūz Sultān Selīm (both Ottoman Navy) with the loss of eleven of her 69 crew.
HMS Mechanician (Royal Navy) The escort ship was torpedoed and sunk in the English Channel 8 nautical miles (15 km) west of St. Catherine's Point, Isle of Wight by
SM UB-35 ( Kaiserliche Marine) with the loss of thirteen of her crew.
Midilli (Ottoman Navy) The Magdeburg-class cruiser struck five mines and sank in the Ionian Sea with the loss of 330 of her 492 crew.
HMS Raglan (Royal Navy) The Abercrombie-class monitor was shelled and sunk by
Midilli and
Yavūz Sultān Selīm (both Ottoman Navy) with the loss of 127 of her 198 crew.
SMS S16 (Kaiserliche Marine) The V1-class destroyer struck a mine and sank in the North Sea with the loss of 80 of her crew.
Yavūz Sultān Selīm (Ottoman Navy) The Moltke-class battlecruiser struck three mines in the Aegean Sea and was beached at Nagara Point, in the Dardanelles. She was later repaired and returned to service.