British First Army (1914–1918)

Army · United Kingdom · from December 26, 1914

Formed under Douglas Haig, later Henry Horne; it held Artois and French Flanders and ended the war at Mons.

Recorded for World War I.

December 26, 1914 – March 9, 1915 Holds from Armentières to La Bassée · map
March 10, 1915 – September 24, 1915 Attacks at Neuve Chapelle (Battle of Neuve Chapelle) · map
September 25, 1915 – April 8, 1917 Attacks at Loos (Third Battle of Artois) · map
April 9, 1917 – April 8, 1918 Takes Vimy Ridge (Battle of Vimy Ridge) · map
April 9, 1918 Holds the Lys (Battle of the Lys (1918)) · map
November 11, 1918 Takes Mons on the last day · map