 Complete the following phrase:  The division was then split up with the 3rd Cavalry Brigade serving with First Army, 4th Cavalry Brigade with Third Army and 5th Cavalry Brigade with Fourth Army. The brigades variously took part in the battles of the Hindenburg Line: the battles of Canal du Nord 27 September1 October, St. Quentin Canal 29 September2 October, Beaurevoir Line 35 October and Cambrai 89 October and the Pursuit to the Selle 912 October. Its final action was to take part in the Advance in Picardy 17 October11 November including the 