Espionage or spying is a practice of gathering intelligence about an organization or a society that is considered secret or confidential without the permission of the holder of the information. It is also the use of spies in a war. Unlike other forms of intelligence collection disciplines, espionage involves accessing the place where the desired information is stored, or accessing the people who know the information and will divulge it through some kind of subterfuge. The US defines espionage towards itself as "The act of obtaining, delivering, transmitting, communicating, or receiving information about the national defense with an intent, or reason to believe, that the information may be used to the injury of the United States or to the advantage of any foreign nation. Espionage is a violation of 18 United States Code 792-798 and Article 106, Uniform Code of Military Justice ."