 General of Division Jean Lannes moved south from Milan with his corps, seizing Pavia on 3 June and being initially repulsed by Piacenza's tiny 400-man garrison.In a series of operations on 6 June, Generals of Division Joachim Murat and Jean Boudet ferried their troops across the Po to the east of Piacenza while Lannes crossed the Po to the west of the city.Murat then overran Piacenza while Lannes pushed O'Reilly back to the west.