In the Royal Navy the fleet training policy will remain unchanged. National Service men will take part in Fleet exercises and other training to the same extent as Regulars. In the Army, formation training will, in general, follow the prewar arrangements, except that no specific period of the year will be allotted; collective training exercises will be held periodically throughout the year. In the Army at home and in Europe, units will consist of both Regulars and National Service men, all of whom will take part in the exercises. In the Royal Air Force, all operational units do the maximum amount of operational training possible, depending on the strength of their ground staff and the state of training of the flying personnel. National Service men will often take part as ground staff, but not as flying personnel, as they will not be able to reach the stage of training necessary.