 Complete the following phrase:  They had to put aside their differences during the French invasion of Russia, when Morands division formed part of Davouts renumbered I Corps. Crossing the Niemen on 24 June 1812, he fought at Smolensk and had his jaw smashed by a shell splinter at the Battle of Borodino. He continued to lead his division in the retreat from Moscow, being one of the last formations to leave the city. Fighting at 