To never go to war unarmed is a no-brainer. But not every defensive measure available to the U.S. Armed Forces is a weapon.  In making every effort to keep our men safe and protected from any chemical, biological, radiological, and even nuclear attack, the Mission Oriented Protective Posture (MOPP) gear is offered. This is a piece of personal protective equipment for the military, and not exactly popular with the troops who have to wear it in the field.

MOPP gear has five levels depending on the severity of the potential hazard in place. Over garments, gas masks and hoods, gloves, boot covers are the necessary pieces of gear to protect our soldiers.

Let’s look at these various levels. 

MOPP Level 0

MOPP level 0. (U.S. Air Force photo by Master Sgt. Bill Gomez)

At this level, personnel must have all the above gear on-hand and ready to use. This is used during a chemical and biological threat and pre-attack, as outlined in Army Study Guide.

MOPP Level 1

MOPP level 1. (U.S. Air Force photo by Master Sgt. Bill Gomez)

This level requires men to wear their overgarments and field gear with footwear covers and the mask and gloves are carried. This level is generally used when a chemical and/or biological attack in theater is possible. This means a chemical threat is present, so troops must remain alert, as the hazard could escalate at any time.

MOPP Level 2

MOPP level 2. (U.S. Air Force photo by Master Sgt. Bill Gomez)

As you might’ve guessed by now, as the potential risk of attack increases, the MOPP level also increases. This level mandates that ground pounders quickly put on both over garments and boot covers. Mask and gloves still at the carry position. This level is generally used when a chemical and/or biological attack in theater is likely. This is the most commonly used MOPP Level, as it affords the wearer a higher protective posture and a shorter response time to MOPP 4 when directed, says an article from Royal Air Force Lakenheath.

MOPP Level 3

MOPP level 3. (U.S. Air Force photo by Master Sgt. Bill Gomez)

At this level, the threat of coming in contact with hazardous vapors is high. Personnel will wear the over garment, over boots, protective mask, and hood.  You will notice that the gloves are still off.  This is because this change in MOPP status may be going on while troops are engaged in fighting or the case of Air Force or Navy personnel, they are working on aircraft and need use of their hands.

MOPP Level 4

MOPP level 4. (U.S. Air Force photo by Master Sgt. Bill Gomez)

The scariest level is used for the highest degree of chemical and/or biological attack. Protection is required, or when chemical and/or biological agents are present, but the actual hazard has not been determined. This means all protective gear must be worn.