 Complete the following phrase:  The IV Cavalry Corps of the Grande Armée was a French military unit that existed during the Napoleonic Wars. The corps was created in 1812 and rebuilt in 1813 and 1815. Emperor Napoleon I first organized the corps for the invasion of Russia. Under General Victor de Fay de La Tour-Maubourg, the corps fought at Borodino. During the War of the Sixth Coalition in 1813, General François Étienne de Kellermann commanded the all-Polish corps at Leipzig. During the Hundred Days in 1815, Napoleon reconstituted the corps and nominated General Édouard Jean Baptiste Milhaud to direct it. Composed entirely of cuirassier regiments, the two divisions fought at 