The Battle of Langemarck from 16–18 August 1917, was the second Allied general attack of the Third Battle of Ypres, during the First World War. The battle took place near Ypres in Belgian Flanders, on the Western Front against the German 4th Army. The French France had a big success on the northern flank and the main British gain of ground occurred near Langemark, adjacent to the French. The Allied attack succeeded from Langemarck to Drie Grachten (Three Canals) but early advances in the south on the Gheluvelt Plateau, were forced back by powerful German counter-attacks.