Not only did the French army suffer heavy casualties at Laon, it also lost between 5,400 and 8,000 men at the Battle of Craonne on 7 March. Napoleon assigned Marshal Édouard Mortier to command 8,000–9,000 infantry in the divisions of Joseph Boyer de Rébeval, Henri François Marie Charpentier, Charles-Joseph Christiani, Philibert Jean-Baptiste Curial, Claude Marie Meunier, Paul-Jean-Baptiste Poret de Morvan and 4,000 cavalry in the divisions of Nicolas-François Roussel d'Hurbal and Louis Michel Pac, and a march regiment. One battalion of the Legion of the Vistula, 600 Polish lancers, three cavalry march regiments, two companies of coast guard gunners, two sapper companies and 1,000 conscripts arrived as reinforcements from Paris. A new cavalry unit called the Converged Squadrons Division was formed and assigned to Sigismond Frédéric de Berckheim.