 Complete the following phrase:  At its formation, the Grande Armée comprised seven army corps, the Imperial Guard, the artillery reserve, and the Cavalry Reserve. The latter consisted of two cuirassier, one light cavalry, and five dragoon divisions, including one dismounted. The mass of 22,000 cavalrymen was supported by 24 pieces of artillery, while the remainder of the armys cavalry was distributed among the army corps in brigades or divisions. Napoleon appointed Marshal Joachim Murat to command the Reserve Cavalry. Generals Étienne Marie Antoine Champion de Nansouty and Jean-Joseph Ange dHautpoul led the cuirassier divisions while Generals Louis Klein, Frédéric Henri Walther, Marc Antoine de Beaumont, and François Antoine Louis Bourcier headed the dragoon divisions and General Louis Baraguey dHilliers commanded the dismounted unit. On 8 October 1805, at the 