. German cavalry of  HKK 4 operating to the north of the 6th Army, had probed north-west as far as Ypres and towards Estaires in the Lys valley and then retired south across the Lys near Armentières and moved south-west through Bailleul and Frélinghien to Laventie. The 3rd cavalry Division found the road to Estaires blocked and 6th Cavalry Division moved through Deûlemont and Radinghem-en-Weppes (Radinghem) to Prémesques and Fleurbaix. A skirmish occurred with French Chasseurs but reinforcements arrived to drive them off and  reservists were captured. The moves of the German cavalry united the divisions of HKK 4 with HKK 1 and HKK 2 but with so ittle room for maneuvre, HKK 4 was sent north of the Lys on 11 October