(1) "Person" includes any individual, partnership, association and corporation;
(2) "Designated enemy country" means any foreign country as to which the United States has declared the existence of a state of war and any other country with which the United States is at war in the future;
(3) "Enemy-occupied territory" means any place under the control of any designated enemy country or any place with which, by reason of the existence of a state of war, the United States does not maintain postal communication.