28th May 1915
Western Front
French advance in the "Labyrinth" (north of Arras).
The Frot-Laffly Landship currently being tested by France.
Eastern Front
Russians take Bubie (Baltic Provinces).
Austro-German advance on Przemsyl continues.
Southern Front
New Zealand troops capture No.3 Post at Gallipoli and prepare for a Ottoman counterattack.
Asiatic and Egyptian Theatres
Russians occupy Vastan (on Lake Van).
Naval
English Channel
Admiralty collier (and two steamships) captured and sunk by U.41 (Claus Hansen):
SPENNYMOOR, Admiralty collier, 2,733/1915, Moor Line, Newcastle-reg, sailing Sunderland for Cardiff with pit timber, on maiden voyage. (L - 27th) - Sunk by torpedo 50 miles SW¼W of Start Point (L - 50 miles SW by W of); 5 lives lost including master.
American victims of Lusitania come home.
Political, etc.
Prime Minister Asquith explains that all Liberalist aims have been suspended until after the war and will work with Conservatives.
200 butcher shops in Glasgow are forced to close today due to a shortage of cattle.
Dr. Bethmann-Hollweg denounces Italy in the Reichstag; Statement re: vodka.
Austro-Hungarian government arrests General Moritz von Auffenberg as a “serious political criminal:”
The first elected President of Portugal Manuel de Arriaga announces he will resign.
Ship Losses:
Ethiope ( United Kingdom): The cargo ship was torpedoed and sunk in the Atlantic Ocean (49°39′N 4°16′W) by
SM U-41 ( Kaiserliche Marine).[30][70] Her 32 crew were rescued by Wiltshire ( United Kingdom) and another vessel.
Mars ( Russia): The sailing ship was sunk in the North Sea 40 nautical miles (74 km) east of the Shetland Islands, United Kingdom by SM U-16 ( Kaiserliche Marine).
Spennymoor ( United Kingdom): The collier was torpedoed and sunk in the Atlantic Ocean 50 nautical miles (93 km) south west of Start Point by
SM U-41 ( Kaiserliche Marine) with the loss of five crew.
Tullochmoor ( United Kingdom): The cargo ship was shelled and sunk in the Atlantic Ocean 52 nautical miles (96 km) north of Ouessant, Finistère, France (49°19′N 5°21′W) by
SM U-41 ( Kaiserliche Marine). Her crew survived.