24 Common Military Terms That Many Civilians Don’t Know

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Military terminology often punctuates TV shows, movies, documentaries, news, and conversations. Understanding these terms can serve many purposes, like becoming a bridge to effective communication with friends and family in the armed forces.  Moreover, this knowledge can be useful for media consumption, giving it depth as you decipher the nuanced language that frequently shapes narratives on global affairs.

1. Reconnaissance

Soldier
Image Credit: Gorodenkoff/Shutterstock.

Reconnaissance, or “recon,” is the military practice of gathering information about an enemy's activities. Specialized units conduct reconnaissance missions to observe, collect data, and analyze terrain. A reconnaissance team might stealthily survey an area before a more significant force moves in, providing crucial intel on enemy positions and strengths.

2. AAR 

US soldiers giving salute
Image Credit: Bumble Dee/Shutterstock.

After Action Review (AAR) is a structured analysis conducted post-mission to evaluate performance and identify lessons learned. It involves a detailed discussion among team members, highlighting successes and areas for improvement. After a training exercise, soldiers participate in an AAR to assess tactics, communication, and overall effectiveness, enhancing future mission outcomes.

3. OPSEC 

ANA computer class featuring a soldier in the forefront operating a computer, while other military personnel discuss in the background.
Image Credit: U.S. Air Force Staff Sgt. D. Myles Cullen – Public Domain/WikiCommons.

Operational Security, or OPSEC, is a vital concept aimed at safeguarding sensitive information to prevent adversaries from piecing together critical details. Whether planning a mission or sharing intelligence, military personnel employ OPSEC measures. For instance, discussing troop movements openly on social media could compromise operational security, emphasizing the need for discretion in communications.

4. FOB 

Bridge near Forward Operating Base (FOB) Bala Murghab.
Image Credit: isafmedia – CC 2.0/WikiCommons.

A Forward Operating Base (FOB) is a strategically positioned military installation that supports tactical operations near the front lines. These bases serve as logistical hubs, providing troops with supplies and facilities. In Afghanistan, for example, FOBs played an essential role in sustaining military operations in remote and challenging terrains.

5. Hooah

Soldier eating Freeze Dried Food
Image Credit: U.S. Army Natick Soldier Systems Center – Digital Commonwealth, Public Domain/Wiki Commons.

“Hooah” is a spirited expression used in the U.S. Army to convey enthusiasm, motivation, or agreement. It is a versatile affirmation, meaning anything from approval to a can-do attitude. Soldiers may shout “Hooah!” in response to a commander's directive or to boost morale during physically demanding training exercises.

6. MRE

2 soldiers eating MREs.
Image Credit: U.S. Navy photo by Mass Communication Specialist 1st Class Carmichael Yepez – Public Domain/WikiLeaks.

An MRE, or Meal, Ready-to-Eat, is a self-contained, lightweight field ration designed for military use. Each MRE provides a complete, ready-to-eat meal, including an entrée, sides, dessert, and beverage. Soldiers rely on MREs during deployments or field exercises, ensuring a convenient and nutritionally balanced food source when traditional cooking is impractical or unavailable.

7. IED

IED Baghdad from munitions.
Image Credit: Public Domain/WikiCommons. 

An Improvised Explosive Device (IED) is a makeshift bomb crafted and deployed by non-professional insurgents. These devices pose a significant threat, often hidden in vehicles or along roadways. Military forces implement counter-IED measures to detect and neutralize them. Unfortunately, IEDs have been responsible for numerous casualties, making them a significant concern in modern asymmetric warfare.

8. CAS

Multinational close air support interoperability.
Image Credit: SFJZ13 – CC 2.0/WikiCommons.

Close Air Support (CAS) involves air assets directly supporting ground forces engaged in battle. Aircraft, such as fighter jets or attack helicopters, deliver precise strikes on enemy targets close to friendly troops. If ground forces encounter heavy resistance, they may call for CAS to suppress or eliminate threats, enhancing the effectiveness of combined arms operations.

9. DMZ

Dora Observatory, Demilitarized Zone (DMZ), South Korea.
Image Credit: Lance Vanlewen – CC 4.0/WikiCommons.

A Demilitarized Zone (DMZ) is where military forces are prohibited, often established as a buffer between conflicting nations. It aims to reduce the risk of hostilities and create a neutral space. The Korean Demilitarized Zone is a prominent example, serving as a boundary between North and South Korea, with restricted military activities to maintain regional stability.

10. AWOL 

The US Army on the Western Front 1917-1918. 2 Methods used by Americans to mark stragglers and deserters.
Image Credit: Public Domain/WikiCommons.

Have you ever heard of someone going AWOL (Absent Without Leave)? It refers to a military member's unauthorized absence from their duty station. It is a disciplinary offense, indicating a breach of duty. Soldiers who fail to report for duty without permission are considered AWOL. The severity of consequences varies, ranging from reprimands to more severe disciplinary actions depending on the circumstances.

11. LZ

SpaceX landing zone featuring a person standing in the center, seemingly to demonstrate size.
Image Credit: SpaceX Photos – CC 0/WikiCommons.

A Landing Zone (LZ) is a designated area for aircraft to land, typically used for troop insertions, resupply missions, or medical evacuations. Soldiers may secure an LZ before helicopters land to ensure a safe arrival. During a mission, a helicopter pilot might receive coordinates for an LZ where troops or supplies must be delivered quickly and safely.

12. CQB

Close quarters battle combat in a military training operation.
Image Credit: Sgt. Steven L. Phillips (US Army) – Public Domain/WikiCommons.

Close Quarters Battle (CQB) involves combat in tight, confined spaces with short engagement distances. Specialized military units, like special forces or counter-terrorism teams, train for CQB scenarios. For example, clearing a building room by room or navigating urban environments requires specific tactics tailored to close quarters to swiftly and efficiently eliminate threats.

13. SITREP

Military personnel calling in a SITREP.
Image Credit: Capt. John Farmer – Public Domain/WikiCommons.

A Situation Report, or SITREP, is a concise update providing essential information on the current status of a military unit or operation. Commanders use SITREPs to stay updated and make informed decisions. During a mission, a squad leader might submit a SITREP detailing the unit's location, status, and significant developments to higher command.

14. SOP

Visual Information Management (VIM) Subject Matter Experts (SME) review the Standard Operating Procedures (SOP) drafts for the first US Marine Corps Best of Imagery (MCBO).
Image Credit: Public Domain/WikiCommons.

A Standard Operating Procedure (SOP) is a set of established guidelines or rules explaining how specific tasks or operations should be executed within a military unit. These procedures ensure consistency, efficiency, and safety. An infantry unit could have SOPs for weapons maintenance, patrol formations, or response to enemy contact, providing a structured framework for day-to-day activities.

15. EOD

Unexploded Ordnance Disposal in Ariake, Tokyo, on June 5, 2019.
Image Credit: Kestrel – CC 4.0/WikiCommons.

Explosive Ordnance Disposal (EOD) is the specialized field focused on identifying, neutralizing, and disposing of explosive devices. EOD technicians use various tools and techniques to handle explosives safely. For example, if an unexploded ordnance is discovered on the battlefield or in a civilian area, EOD teams are called in to assess and safely dispose of the threat.

16. PT

Marine leads ANA soldiers in physical training.
Image Credit: Marines from Arlington, VA, United States – Public Domain/WikiCommons.

Physical Training (PT) in the military involves structured exercise routines to enhance overall fitness and combat readiness. Soldiers engage in PT sessions regularly, including cardiovascular workouts, strength training, and agility drills. A morning PT session may consist of running, calisthenics, and team-building exercises, ensuring soldiers maintain peak physical condition for operational effectiveness.

17. NCO

'Vanguard' soldiers inducted into the non-commissioned officer corps.
Image Credit: U.S. Army photo by Spc. William A. Joeckel – Public Domain/WikiCommons.

A Non-Commissioned Officer (NCO) is an enlisted military member with leadership responsibilities. NCOs typically hold ranks such as sergeant or corporal and play crucial roles in unit management, training, and discipline. Think of a squad leader, usually an NCO, guiding and overseeing the performance of a small group of soldiers during training exercises and missions.

18. UAV

MQ-9 Reaper unmanned aerial vehicle, with two soldiers standing beside it.
Image Credit: Air National Guard photo by Air Force Airman 1st Class Michelle J. Ulber – Public Domain/WikiCommons.

An Unmanned Aerial Vehicle (UAV) is an aircraft operated without a human pilot on board. Military forces use UAVs for reconnaissance, surveillance, and even combat. A UAV equipped with cameras or sensors can provide real-time intelligence by flying over enemy territory, gathering information without risking the safety of a human pilot.

19. BDU 

U.S. Air Force Tactical Air Controllers (known as a Joint Terminal Attack Controller since 2004) wearing BDUs on a mountain in South Korea (June 2003).
Image Credit: Peter Rimar/Chitrapa – Public Domain/WikiCommons.

The Battle Dress Uniform (BDU) is the standard military uniform worn during combat or field training. BDUs are designed for durability and camouflage. Soldiers in woodland environments may wear camouflaged BDUs to blend with the surroundings, providing practical functionality and a standardized appearance for military personnel in operational settings.

20. POG 

4 military men playing cards in a dimly lit tent.
Image Credit: Cpl. Reece Lodder – Public Domain/WikiCommons.

“POG” (Person Other Than Grunt) is a colloquial term referring to military personnel who serve in non-combat roles, contrasting with frontline infantry or “grunts.” POGs encompass different support and administrative roles. An example would be logistics, administration, or intelligence personnel, who may be humorously referred to as POGs, highlighting the distinction between combat and support functions within the military.

21. DOD 

Larry Craig
Image Credit: United States Department of Defense.

The Department of Defense (DOD) is the federal executive department responsible for coordinating and supervising all agencies and functions related to national security and the U.S. Armed Forces. The DOD oversees the Army, Navy, Air Force, and other defense agencies, ensuring a unified approach to military strategy, operations, and resource allocation.

22. CWO

12th Marine Regiment prepares for exercise Resolute Dragon.
Image Credit: Cpl. Alpha Hernandez – Public Domain/WikiCommons.

A Chief Warrant Officer (CWO) is a high-ranking, specialized military officer typically serving in technical or leadership roles. CWOs provide expertise and guidance in their field. A CWO in aviation may be responsible for a unit's aircraft's technical proficiency and operational effectiveness, combining technical skills with leadership responsibilities within the military hierarchy.

23. MEDEVAC

Medical evacuation training in Nangarhar.
Image Credit: U.S. Department of Defense Current Photos – Public Domain/WikiCommons.

Medical Evacuation (MEDEVAC) is the rapid and timely movement of injured or ill personnel from the battlefield to medical facilities for treatment. Dedicated aircraft and teams are employed for MEDEVAC missions. If a soldier sustains injuries in a combat zone, a MEDEVAC helicopter may be dispatched to evacuate them swiftly for urgent medical care, increasing the chances of recovery.

24. CASREP

The Honorable Gordon R. England, Secretary of the Navy, and Chief of Naval Operations Admiral Vern Clark, released the number and names of Navy servicemen and Navy civilan support personnel who lost their lives at the Pentagon.
Image Credit: U.S. Navy photo by Chief Photographer's Mate Dolores L. Parlato – Public Domain/WikiCommons.

A Casualty Report (CASREP) is a document detailing information about personnel or equipment losses sustained during military operations. It provides vital data for assessing the impact on unit readiness. If a vehicle is damaged in combat, a CASREP will outline the extent of the damage, the potential impact on mission capability, and any personnel casualties associated with the incident.

Author: Creshonda Smith

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Creshonda is a content writer with a passion for entertainment and lifestyle topics like parenting, travel, and movies. Hailing from Cleveland, OH, she graduated from The Ohio State University with a bachelor's and master's degree in Clinical Social Work. While she has specific topics that she enjoys writing about, she likes to tackle other topics that she's not as familiar with in an attempt to continually improve her writing skills and knowledge about the world around us. Creshonda has written for various publications such as MSN, Detroit Legal News, Jacksonville Journal-Courier, and more. When she's not serving as a Trending Topics writer for Wealth of Geeks, she's searching for tropical destinations to travel to with her family.