On 1 September Craonne and Soissons were captured and on 5 September the BEF ended its retreat from Mons, German troops reached Claye, 10 kilometers from Paris, Reims was captured, German forces withdrew from Lille and the First Battle of the Marne (Battle of the Ourcq) (5–12 September) began, marking the end of the Great Retreat of the western flank of the Franco-British armies.