 Many techniques of guerrilla and irregular warfare were developed there and training techniques which were adopted for Commando training as well as Achnacarry Castle.SOE training was centred on nearby Arisaig House.The army moved out of the house on 20 August 1942 and, after having been taken over by the Royal Navy, subsequently became HMS Lochailort and was used for the training of naval cadet ratings to be officers on small craft used by Combined Operations.