

Obstacle zone - A division-level command and control measure to designate specific land areas where lower echelons are allowed to employ tactical obstacles.

Obstacle restricted areas - A command and control measure used to limit the type or number of obstacles within an area. Obstacle clearing - The total elimination or neutralization of obstacles. Obstacle belt - A brigade-level command and control measure, normally depicted graphically, to show where within an obstacle zone the ground tactical commander plans to limit friendly obstacle employment and focus the defense. Obstacle - Any natural or man-made obstruction designed or employed to disrupt, fix, turn, or block the movement of an opposing force, and to impose additional losses in personnel, time, and equipment on the opposing force. Observable - In military deception, the detectable result of the combination of an indicator within an adversary’s conduit intended to cause action or inaction by the deception target. Objective area - A geographical area, defined by competent authority, within which is located an objective to be captured or reached by the military forces. The specific goal of the action taken which is essential to the commander’s plan. The clearly defined, decisive, and attainable goal toward which an operation is directed. Object-based production - The intelligence communities’ framework for organizing and sharing information, relating data from all sources to known objects (e.g., units, people, locations, or events). See also Official DOD Shortened Word Forms. Read on for military definitions that begin with O such as obstacle zone, on-call target, operational readiness, and more. Browse terms from the official DOD Dictionary of Military and Associated Terms that start with O and view definitions.

Here are the DOD Dictionary terms beginning with the letter O and organized alphabetically.
