"Human intelligence (HUMINT), which is the oldest of the intelligence disciplines, has through the course of the 20th century been less emphasized by the U.S. Army relative to the technical disciplines of signals intelligence and imagery intelligence. HUMINT should remain a key component of an intelligence system, as it can cue and be cued by the other disciplines and combine with them to be more effective than any of them would be by itself. Also, the Army is involved in low- and mid-intensity campaigns around the world and Army doctrine for these types of operations identifies the importance of HUMINT in their conduct. Army leadership has expressed dissatisfaction with the current state of Army HUMINT and stated that it needs improvement. To make such an improvement, principles of HUMINT are necessary so that the HUMINT system and its components, including the individual HUMINT collectors, may be properly designed or trained. Such principles may be derived from writings of theorists and practitioners of HUMINT."
Defense Technical Information Center (DTIC): http://www.dtic.mil/dtic/