4 February

Lonsdale Battalion events that took place on 4 February.
For events that took place elsewhere, see 4 February on The Great War wiki.

1915 (Thursday)

Template:WF British casualties on Western Front to this date approximately 104,000.
Template:EF Continued heavy fighting on Bzura-Ravka front; Russians cross Bzura and take positions near Dachova.
- Russians falling back in Bukovina.
Template:NO German attack on Kakamas (north-west Cape Colony) repulsed.
Template:PO Germans declare waters round the United Kingdom a "war region" as from 18 February.^[1]

Lord Edward Gleichen (1918–1920). Chronology of the War. Volumes I, II & III. Constable & Company, London. (Copyright expired)

↑ Quote from German declaration: "The waters around Great Britain and Ireland....are herewith proclaimed a war region. On and after February 18, every enemy merchant vessel found in this region will be destroyed without its always being possible to warn the crew and passengers....Neutral ships will also incur danger in the war-region, since....it cannot be guaranteed that attacks intended for enemy ships will not affect neutral ships also. Vessels sailing to the north of the Shetlands, in the eastern part of the North Sea, and in a zone at least 30 knots wide along the Netherlands coast, are not menaced by any danger."