On October 8, 1915, the Battle of Loos on WWI Western Front ended. An excerpt from the article:
"The Battle of Loos saw the British make minor gains in exchange for around 50,000 casualties. German losses are estimated at around 25,000. Though some ground had been gained, the fighting at Loos proved a failure as the British were unable to break through the German lines. French forces elsewhere in Artois and Champagne met a similar fate. The setback at Loos helped contribute to the downfall of French as commander of the BEF. An inability to work with the French and active politicking by his officers led to his removal and replacement with Haig in December 1915."