Complex sentence: The barracks were intended to be the depot of the 38th (1st Staffordshire) Regiment of Foot and 80th Regiment of Foot (Staffordshire Volunteers) which amalgamated under the Childers Reforms to form the South Staffordshire Regiment in 1881.
Split into simpler sentences: The barracks were intended to be the depot of the 38th (1st Staffordshire) Regiment of Foot and 80th Regiment of Foot (Staffordshire Volunteers). Under the Childers Reforms these regiments amalgamated to form the South Staffordshire Regiment in 1881.