 It was renamed the 91st (the Argyllshire Highlanders) Regiment of Foot in May 1864 and embarked for England in October 1868.Following the marriage between Princess Louise and John Campbell, Marquis of Lorne at St George's Chapel, Windsor Castle in March 1871, at which the regiment formed a guard of honour, the regiment was renamed the 91st (Princess Louise's Argyllshire Highlanders) Regiment of Foot in August 1872.It was then dispatched to South Africa in February 1879 for service in the Anglo-Zulu war and fought at the Battle of Gingindlovu in April 1879 before lifting the Siege of Eshowe later that month.