 It went on to fight at the Siege of Burgos in September 1812 before returning home in December 1812.The battalion subsequently landed in Holland and fought at the Battle of Quatre Bras and the Battle of Waterloo in June 1815.At Waterloo the 2nd Battalion, 73rd (Perthshire) Regiment of Foot and the 2nd Battalion, 30th Regiment of Foot formed a defensive square to defend their ground against successive French attacks.