By 18 October the Belgian, British and French troops in northern France and Belgium had formed a line with the BEF II Corps in position with the 5th Division from La Bassée Canal north to Beau Puits, the 3rd Division from Illies to Aubers and three divisions of the French Cavalry Corps of General Conneau in position from Fromelles to Le Maisnil, the BEF III Corps with the 6th Division from Radinghem to Epinette and the 4th Division from Epinette to Pont Rouge, the BEF Cavalry Corps with the 1st and 2nd Cavalry divisions, from Deulemont to Tenbrielen, the BEF IV Corps with the 7th Division and 3rd Cavalry Division from Zandvoorde to Oostnieuwkirke, the French and the de Mitry Cavalry Corps from Roulers to Cortemarck, the French 87th and 89th Territorial Divisions from Passchendaele to Boesinghe and then the Belgian Field Army and fortress troops from Boesinghe to Nieuport (including the Fusilier Marin brigade at Dixmude). The Battle of the Yser began on 16 October.