 Complete the following phrase:  At the Battle of Laon on 9 March, the 10,000 troops of the corps arrived in the early afternoon and captured some positions east of Laon. Satisfied, Marmont called off the attack and the troops went into bivouac. Without warning, Blücher launched an attack in the evening, routing the VI Corps. Two pieces of luck allowed Marmont and his men to escape. General Charles Nicolas Fabvier, sent on a mission with 1,000 men, returned to keep the road open. Meanwhile, 125 soldiers of the Old Guard held off waves of Allied cavalry to hold the Festieux defile. At the Battle of Reims on 13 March, Marmonts corps helped recapture the city. At the 