 Complete the following phrase:  At the Battle of La Rothiere on 1 February 1814, Doumerc led a 1,900-strong light cavalry division in Marshal Auguste Marmonts corps. His command consisted of the 2nd, 3rd, and 4th Chasseurs à cheval, the 1st Provisional Hussars, and 12 pieces of horse artillery. Doumerc led his cavalry division at the 