text: Military Terms
  fire team — A small military unit typically containing four or fewer Soldiers. (ADP 3-90)
  fires — (DOD) The use of weapon systems or other actions to create specific lethal or nonlethal effects on a
  target. (JP 3-0)
  fires warfighting function — The related tasks and systems that create and converge effects in all domains
  against the adversary or enemy to enable operations across the range of military operations. (ADP 3-0)
  first aid (self-aid/buddy aid) — Urgent and immediate lifesaving and other measures which can be performed
  for casualties (or performed by the victim them self) by nonmedical personnel when medical personnel are not
  immediately available. (FM 4-02)
  fix — 1. A tactical mission task in which a unit prevents the enemy from moving from a specific location for a
  specific period. 2. An obstacle effect that focuses fire planning and obstacle effort to slow an attacker’s
  movement within a specified area, normally an engagement area. (FM 3-90)
  fixing force — A force designated to supplement the striking force by preventing the enemy from moving from a
  specific area for a specific time. (ADP 3-90)
  flank — The right or left limit of a unit. (ADP 3-90)
  flanking position — A geographical location on the flank of the force from which effective fires can be placed on
  that flank. (ADP 3-90)
  flexibility — The employment of a versatile mix of capabilities, formations, and equipment for conducting
  operations. (ADP 3-0)
  flexible deterrent option — (DOD) A planning construct intended to facilitate early decision making by
  developing a wide range of interrelated responses that begin with deterrent-oriented actions carefully tailored
  to create a desired effect. (JP 5-0) Also called FDO.
  flexible response — (DOD) The capability of military forces for effective reaction to any enemy threat or attack
  with actions appropriate and adaptable to the circumstances existing. (JP 5-0)
  follow and assume — A tactical mission task in which a committed force follows a lead force conducting an
  offensive operation and continues the mission if the lead force cannot continue. (FM 3-90)
  follow and support — A tactical mission task in which a committed force follows and supports a lead force
  conducting an offensive operation. (FM 3-90)
  follow-on echelon — Those additional forces moved into the objective area after the assault echelon. (FM 3-99)
  See also air assault operation, assault echelon.
  force field artillery headquarters — A battalion size or higher unit designated by the supported commander
  who specifies its duration, duties, and responsibilities. (FM 3-09)
  force health protection — (DOD) Measures to promote, improve, or conserve the behavioral and physical well-
  being of Service members to enable a healthy and fit force, prevent injury and illness, and protect the force
  from health hazards. (JP 4-02) Also called FHP. (Army) Measures that promote, improve, conserve or
  conserve the behavioral or physical well-being of Soldiers comprised of preventive and treatment aspects of
  medical functions that include: combat and operational stress control, dental services, veterinary services,
  operational public health, and laboratory services. Enabling a healthy and fit force, prevent injury and illness,
  and protect the force from health hazards. (FM 4-02)
  force projection — (DOD) The ability to project the military instrument of national power from the United States
  or another theater, in response to requirements for military operations. (JP 3-0)
  force protection — (DOD) Preventive measures taken to mitigate hostile actions against Department of
  Defense personnel (to include family members), resources, facilities, and critical information. (JP 3-0) Also
  called FP.
  force protection condition — (DOD) A Chairman of the Joint Chiefs of Staff-approved standard for
  identification of and recommended responses to terrorist threats against United States personnel and facilities.
  (JP 3-26) Also called FPCON.
  force tailoring — The process of determining the right mix of forces and the sequence of their deployment in
  support of a joint force commander. (ADP 3-0)
  forced march — A march longer or faster than usual or in adverse conditions. (FM 3-90)
  forcible entry — (DOD) Seizing and holding of a military lodgment in the face of armed opposition or forcing
  access into a denied area to allow movement and maneuver to accomplish the mission. (JP 3-18)
  foreign assistance — (DOD) Support for foreign nations that can be provided through development assistance,
  humanitarian assistance, and security assistance. (JP 3-0)