text: Military Terms
  operations security — (DOD) A capability that identifies and controls critical information, indicators of friendly
  force actions attendant to military operations, and incorporates countermeasures to reduce the risk of an
  adversary exploiting vulnerabilities. (JP 3-13.3) Also called OPSEC.
  operations security vulnerability — (DOD) A condition in which friendly actions provide operations security
  indicators that may be obtained and accurately evaluated by an adversary in time to provide a basis for
  effective adversary decision making. (JP 3-13.3)
  opinio juris — A statement of customary international law resulting from a general and consistent practice of
  States followed from a sense of legal obligation. (FM 6-27)
  order of battle — (DOD) The identification, strength, command structure, and disposition of the personnel, units,
  and equipment of any military force. (JP 2-0) Also called OB.
  ordnance — (DOD) Explosives, chemicals, pyrotechnics, and similar stores, e.g., bombs, guns and ammunition,
  flares, smoke, or napalm. (JP 3-15)
  organic — (DOD) Assigned to and forming an essential part of a military organization as listed in its table of
  organization for the Army, Air Force, and Marine Corps and are assigned to the operating forces for the Navy.
  (JP 1 Volume 2)
  orienting angle — A horizontal, clockwise angle measured from the line of fire to the orienting line. (ATP 3-
  09.50)
  orienting line — A line of known direction in the firing unit’s area that serves as a basis for laying the firing unit
  for direction. (ATP 3-09.50)
  orienting station — 1. A point established on the ground that has directional control. 2. An orienting device,
  such as an aiming circle or gun laying and positioning system, set up over a point to lay the weapons by the
  orienting angle method. (ATP 3-09.50)
  outpatient — A person receiving medical/dental examination and/or treatment from medical personnel and in a
  status other than being admitted to a hospital. Included in this category is the person who is treated and
  retained (held) in a medical treatment facility (such as a Role 2 facility) other than a hospital. (ATP 4-02.10)
  overbridging — A method used to reinforce, provide emergency repair, or augment existing bridges or spans
  using standard bridging. (ATP 3-90.4)
  overhead persistent infrared — (DOD) 1. Those systems originally developed to detect and track foreign
  intercontinental ballistic missile systems. (JP 3-14) Also called OPIR.
  overwatch — A task that positions an element to support the movement of another element with immediate fire.
  (ATP 3-21.10)
  —P—
  parallel planning — Two or more echelons planning for the same operations nearly simultaneously facilitated by
  the use of warning orders by the higher headquarters. (ADP 5-0)
  paramilitary forces — (DOD) Armed forces or groups distinct from the conventional armed forces of any
  country, but resembling them in organization, equipment, training, or mission. (JP 3-24)
  parlementaire — Agents or envoys employed by commanders in the field to go in person within the enemy lines
  for the purpose of communicating or negotiating openly and directly with the enemy commander. (FM 6-27)
  partner nation — (DOD) Those nations that the United States works with to disrupt the production,
  transportation, distribution, and sale of illicit drugs, as well as the money involved with this illicit activity. (JP 3-
  07.4) Also called PN.
  passage lane — A lane through an obstacle that provides safe passage for a passing force. (FM 3-90)
  passage of lines — (DOD) An operation in which a force moves forward or rearward through another force’s
  combat positions with the intention of moving into or out of contact with the enemy. (JP 3-18)
  passage point — A designated place where passing units pass through the stationary unit. (FM 3-90) Also
  called PP.
  passive air defense — (DOD) All measures other than active air defense, taken to minimize the effectiveness of
  hostile air and missile threats against friendly forces and assets. (JP 3-01)
  passive defense — (DOD) Measures taken to reduce the probability of and to minimize the effects of damage
  caused by hostile action without the intention of taking the initiative. (JP 3-60)
  pathway defeat — (DOD) Activities to dissuade, deter, delay, disrupt, destroy, deny, and assure to complicate
  conceptualization, development, production, and proliferation of weapons of mass destruction. (JP 3-40)
  patient — A sick, injured or wounded Soldier who receives medical care or treatment from medically trained
  personnel. (FM 4-02)