Complex sentence: In 1815, the 7th (National) Light Cavalry regiment was formed into two Cuirassier regiments, and the Hussars and Uhlans were disbanded in 1822.
Split into simpler sentences: In 1815, the 7th (National) Light Cavalry regiment was formed into two Cuirassier regiments. The Hussars and Uhlans were disbanded in 1822.