“enemy means
- in relation to World War I or World War II - the naval, military or air forces, or any part of the naval, military or airforces, of a State at war with the Crown during that war; and
- in relation to service in, or a period of hostilities in respect of, an operational area - the naval, military or air forces against which the Naval, Military or Air Forces of the Commonwealth were engaged in that operational area; and
- persons assisting any of those forces.”