 Complete the following phrase:  La Martillière commanded the artillery park of the Army of the Rhine 1797 and successively the Army of Mayence 1798 and the Army of the Danube, 1799. Following the reorganization of the Army of the Danube in April 1799, he was attached to André Massénas Army of Helvetia. He participated in the Ostrach, Stockach, and 