Military Glossary

Initial provisioning
(DOD) The process of determining the range and quantity of items (i.e., spares and repair parts, special tools, test equipment, and support equipment) required to support and maintain an item for an initial period of service. Its phases include the identification of items of supply, the establishment of data for catalog, technical manual, and allowance list preparation, and the preparation of instructions to assure delivery of necessary support items with related end articles.

Initial unloading period
(DOD, NATO) In amphibious operations, that part of the ship-to-shore movement in which unloading is primarily tactical in character and must be instantly responsive to landing force requirements. All elements intended to land during this period are serialized.

Initiation of procurement action
(DOD) That point in time when the approved document requesting procurement and citing funds is forwarded to the procuring activity.

Inshore patrol
(DOD, NATO) A naval defense patrol operating generally within a naval defense coastal area and comprising all elements of harbor defenses, the coastal lookout system, patrol craft supporting bases, aircraft, and Coast Guard stations.

Instrument approach procedure
(DOD, NATO) A series of predetermined maneuvers for the orderly transfer of an aircraft under instrument flight conditions from the beginning of the initial approach to a landing or to a point from which a landing may be made visually or the missed approach procedure is initiated.

Integrated fire control system
(DOD) A system which performs the functions of target acquisition, tracking, data computation, and engagement control, primarily using electronic means assisted by electromechanical devices.

Integrated tactical warning
See tactical warning.

Intelligence contingency funds
(DOD) Appropriated funds to be used for intelligence activities when the use of other funds is not applicable or would either jeopardize or impede the mission of the intelligence unit.

Intelligence data handling systems
(DOD) Information systems that process and manipulate raw information and intelligence data as required. They are characterized by the application of general purpose computers, peripheral equipment, and automated storage and retrieval equipment for documents and photographs. While automation is a distinguishing characteristic of intelligence data handling systems, individual system components may be either automated or manually operated.

Intelligence preparation of the battlespace
(DOD) An analytical methodology employed to reduce uncertainties concerning the enemy, environment, and terrain for all types of operations. Intelligence preparation of the battlespace builds an extensive data base for each potential area in which a unit may be required to operate. The data base is then analyzed in detail to determine the impact of the enemy, environment, and terrain on operations and presents it in graphic form. Intelligence preparation of the battlespace is a continuing process.

Intelligence subject code
(DOD) A system of subject and area references to index the information contained in intelligence reports as required by a general intelligence document reference service.

Interagency coordination
(DOD) Within the context of Department of Defense involvement, the coordination that occurs between elements of the Department of Defense and engaged US Government agencies, nongovernmental organizations, private voluntary organizations, and regional and international organizations for the purpose of accomplishing an objective.

Intercontinental ballistic missile
(DOD) A ballistic missile with a range capability from about 3,000 to 8,000 nautical miles.

Interim JTIDS message specification
See tactical digital information link.

Intermediate marker (land mine warfare)
(DOD, NATO) A marker, natural, artificial or specially installed, which is used as a point of reference between the landmark and the minefield.

International arms control organization
(DOD) An appropriately constituted organization established to supervise and verify the implementation of arms control measures.

International loading gauge (GIC)
(DOD, NATO) The loading gauge upon which international railway agreements are based. A load whose dimensions fall within the limits of this gauge may move without restriction on most of the railways of Continental Western Europe.

Intracoastal sealift
(DOD) Shipping used primarily for the carriage of personnel and/or cargo along a coast or into river ports to support operations within a given area.

IO
See information operations.

ISOPREP
(DOD) See isolated personnel report.

IW
See information warfare.

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