▁avoid ▁a ▁direct ▁confront ation ▁with ▁the ▁adv ancing ▁French , ▁and ▁spent ▁the ▁next ▁several ▁weeks ▁engaged ▁in ▁light ▁sk irm ishing . ▁ ▁By ▁ 9 ▁May , ▁however , ▁Louis ▁had ▁crossed ▁the ▁Add a ▁River ▁at ▁Cass ano ▁d ' Add a . ▁ ▁Al v iano ▁and ▁Pit igli ano , ▁enc amp ed ▁around ▁the ▁town ▁of ▁Tre v ig lio , ▁disag re ed ▁on ▁how ▁to ▁deal ▁with ▁Louis , ▁since ▁Al v iano ▁wanted ▁to ▁attack ▁the ▁French ▁in ▁def iance ▁of ▁his ▁orders ; ▁they ▁finally ▁decided ▁to ▁move ▁south ▁towards ▁the ▁Po ▁River ▁in ▁search ▁of ▁better ▁positions . ▁ ▁On ▁ 1 4 ▁May , ▁as ▁the ▁Ven et ian ▁army ▁moved ▁south , ▁Al v iano ' s ▁re arg u ard , ▁commanded ▁by ▁Pier o ▁del ▁Monte ▁and ▁S acc oc cio ▁da ▁S pole to , ▁was ▁attacked ▁by ▁a ▁French ▁det achment ▁under ▁Gian ▁Gia como ▁T riv ul z io , ▁who ▁had ▁mass ed ▁his ▁troops ▁around ▁the ▁village ▁of ▁Ag nad ello . ▁ ▁Al v iano , ▁who ▁was ▁at ▁P and ino , ▁hurried ▁back ▁to ▁position ▁his ▁forces , ▁number ing ▁around ▁eight ▁thousand , ▁on ▁a ▁r idge ▁over looking ▁some ▁v ine y ards . ▁Charles ▁II ▁attempted ▁to ▁attack , ▁first ▁with ▁caval ry ▁and ▁then ▁with ▁Swiss ▁p ik emen , ▁but ▁the ▁French , ▁forced ▁to ▁march ▁up ▁a ▁hill side ▁crossed ▁with ▁ir rig