Further enhancements to the barracks took place in the 1930s when the wooden huts were removed. The name of the barracks, given in 1958, commemorates the actions of the 35th (Royal Sussex) Regiment of Foot in putting the Regiment Royal Roussillon to flight at the Battle of the Plains of Abraham during the Seven Years' War. The barracks were demoted to the status of out-station to the Home Counties Brigade depot at Howe Barracks in Canterbury in 1959.