Military Glossary

Retrograde movement
(DOD) Any movement of a command to the rear, or away from the enemy. It may be forced by the enemy or may be made voluntarily. Such movements may be classified as withdrawal, retirement, or delaying action.

Riot control agent
(DOD, NATO) A substance which produces temporary irritating or disabling physical effects that disappear within minutes of removal from exposure. There is no significant risk of permanent injury, and medical treatment is rarely required.

Roentgen equivalent mammal
(DOD) One roentgen equivalent mammal is the quantity of ionizing radiation of any type which, when absorbed by man or other mammal, produces a physiological effect equivalent to that produced by the absorption of 1 roentgen of X-ray or gamma radiation.

Rules of engagement
(DOD) Directives issued by competent military authority which delineate the circumstances and limitations under which United States forces will initiate and/or continue combat engagement with other forces encountered.

RADAREXREP
See radar exploitation report.

RADINT
See radar intelligence.

Radio recognition
(DOD, NATO) The determination by radio means of the friendly or enemy character, or the individuality, of another.

Random minelaying
(DOD, NATO) In land mine warfare, the laying of mines without regard to pattern.

Ready CAP
(DOD) Fighter aircraft in condition of "standby."

Receipt into the supply system
(DOD) That point in time when the first item or first quantity of the item of the contract has been received at or is en route to point of first delivery after inspection and acceptance.

Reference datum
(DOD, NATO) As used in the loading of aircraft, an imaginary vertical plane at or near the nose of the aircraft from which all horizontal distances are measured for balance purposes. Diagrams of each aircraft show this reference datum as "balance station zero."

Replenishment at sea
(DOD, NATO) Those operations required to make a transfer of personnel and/or supplies when at sea.

Rescue coordination center
(DOD) A primary search and rescue facility suitably staffed by supervisory personnel and equipped for coordinating and controlling search and rescue and/or combat search and rescue operations. The facility is operated unilaterally by personnel of a single Service or component. For Navy component operations, this facility may be called a rescue coordination team.

Resource management operations
(DOD) The execution of the resource management mission which includes providing advice and guidance to the commander, developing command resource requirements, identifying sources of funding, determining cost, acquiring funds, distributing and controlling funds, tracking costs and obligations, cost capturing and reimbursement procedures, and establishing a management control process.

Returned to military control
(DOD) The status of a person whose casualty status of duty status - whereabouts unknown or missing has been changed due to the person's return or recovery by US military authority.

Road clearance time
(DOD, NATO) The total time a column requires to travel over and clear a section of the road.

Rough terrain container handler
(DOD) A piece of materials handling equipment used to pick up and move containers.

Runway visual range
(DOD, NATO) The maximum distance in the direction of takeoff or landing at which the runway, or specified lights or markers delineating it, can be seen from a position above a specified point on its center line at a height corresponding to the average eye level of pilots at touch-down.

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