Crepy   Air reconnaissance on the fronts of the VII Corps and X Reserve Corps on  August reported that the British were retreating south of the Aisne towards CrpyenValois The five  of the II Cavalry Corps were sent towards Crpy on  September and encountered British troops who repulsed an attack on the village The st Army had attempted to trap British rearguards at Crpy and VillersCotterts but they had slipped away Air reconnaisssance revealed that British olumns were moving south from the area southwest of VillersCotterts south of Crpy and from Creil