Restricted U.S. Army Unexploded Ordnance Procedures Reference Card from March 2007.
UXO on the battlefield affects the mobility and mission aspects of all units. Battlefields are littered with UXO hazards from two sources: ordnance that has either failed to function or ordnance designed to be used for area denial, such as conventional land mines and the family of scatterable mines (FASCAM). With the sophistication of modern weapons systems, battlefield commanders can target anything within their theater of operations.
After these attacks are completed, UXO hazards will be left on the battlefield. UXO hazards may not always pose an immediate threat to unit mission or mobility, but they are hazards that have in the past caused needless loss of life and materiel. Battlefield commanders need to know where UXO hazards are, as these hazards can affect the mobility of follow-on elements. This manual teaches personnel about the UXO hazard and how this hazard affects mission capabilities and what procedures are used to report
and protect personnel and equipment. All units should be able to react to the UXO hazard effectively and to report and protect against it.