4th May 1915
Western Front
Second Battle of Ypres: French advance between Lizerne and Het Sas; Germans capture Zonnebeke, Wetshoek and Zevenkote.
Battle of St. Julien comes to a close as British forces withdraw towards new defensive lines closer to Ypres.
Eastern Front
Severe fighting in Galicia: Russians stand on the Visloka River. Austro-Hungarian and German troops continue their advance in Galicia and claim they have captured 30,000 Russian soldiers.
Southern Front
Dardanelles: British failure at Gaba Tepe.
Naval
The US Navy launches the USS Tucker, the lead ship of the Tucker-class destroyer.
Political, etc.
David Lloyd George states that if the war continues for another 6 months, it would cost £2.1 million (£150 million today) per day.
Irish Parliamentary Party protest the proposed taxation of spirits and beers, as it would disproportionately hurt Ireland’s industries.
Italy denounces the Triple Alliance.
Japanese Legation in Peking advises its citizens to leave the city; 100,000 Chinese troops prepare to defend the capital.
Ship Losses:
Elsa ( Sweden): The schooner was sunk in the North Sea south east of Peterhead, Aberdeenshire, United Kingdom by
SM U-39 ( Kaiserliche Marine). Her five crew were rescued by Sernebo ( Sweden).
Rugby ( United Kingdom): The trawler was captured and scuttled in the North Sea 100 nautical miles (190 km) east north east of the Spurn Lightship ( United Kingdom) by
SM U-9 ( Kaiserliche Marine). Her crew survived.
Vanadis ( Sweden): The coaster was shelled and sunk in the Baltic Sea by
SMS Silvana ( Kaiserliche Marine). Her crew survived.