text: Glossary
  infiltration
  (Army) A form of maneuver in which an attacking force conducts undetected movement
  through or into an area occupied by enemy forces to occupy a position of advantage in the
  enemy rear while exposing only small elements to enemy defensive fires (FM 3-90).
  information engagement
  The integrated employment of public affairs to inform US and friendly audiences;
  psychological operations, combat camera, US Government strategic communication
  and defense support to public diplomacy, and other means necessary to influence foreign
  audiences; and, leader and Soldier engagements to support both efforts (FM 3-0).
  information warfare
  Information Operations conducted during time of crisis or conflict to achieve or promote
  specific objectives over a specific adversary or adversaries (JP 1-02).
  insurgency
  (Joint) An organized movement aimed at the overthrow of a constituted government through
  the use of subversion and armed conflict (JP 1-02).
  insurgent
  (DOD) Member of a political party who rebels against established leadership.
  intelligence
  1. The product resulting from the collection, processing, integration, analysis, evaluation,
  and interpretation of available information concerning foreign countries or areas.
  2. Information and knowledge about an adversary obtained through observation,
  investigation, analysis, or understanding (JP 1-02).
  intelligence preparation of the battlefield
  The systematic, continuous process of analyzing the threat and environment in a specific
  geographic area. Intelligence preparation of the battlefield (IPB) is designed to support the
  running estimate and military decision-making processes. Most intelligence requirements are
  generated as a result of the IPB process and its interrelation with the decision-making process
  (FM 34-130).
  intelligence, surveillance, and reconnaissance
  (Army) An activity that synchronizes and integrates the planning and operation of sensors,
  assets, and processing, exploitation, and dissemination systems in direct support of current
  and future operations. This is an integrated intelligence and operations function. For Army
  forces, this activity is a combined arms operation that focuses on priority intelligence
  requirements while answering the commander’s critical information requirements (FM 3-0).
  interagency
  (Joint) United States Government agencies and departments, including the Department
  of Defense (JP 3-08).
  interagency coordination
  (Joint) Within the context of Department of Defense involvement, the coordination that
  occurs between elements of Department of Defense and engaged US Government agencies
  for the purpose of achieving an objective (JP 1-02).
  interdict
  A tactical mission task where the commander prevents, disrupts, or delays the enemy’s use
  of an area or route (FM 3-90).