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MOS COMPARISON

31A vs 31E

Military Police (USA) vs Corrections and Detention Specialist (USA)

Intel

Same green uniform, different buildings, same parking lot argument about who actually works harder. The debate predates both MOS codes.

On one side of the military: law enforcement experience on Army installations is real — your soldiers are responding to the same calls civilian police respond to, in communities with elevated rates of domestic violence, substance abuse, and the other consequences of repeated deployments. The tension in MP culture is between the law enforcement identity and the combat support identity, and which one dominates depends heavily on the assignment. On the other end of the spectrum: the legal framework — Geneva Conventions, AR 190-8, applicable LOAC — is not optional reading; it is the structure that defines every decision you make. The professional skills — facility management, population control, use-of-force procedures, detainee tracking systems — transfer to corrections, federal detention (BOP, USMS), and security management. Recruiting Command somehow markets both of these with the same enthusiasm. That's institutional stamina.

31AArmy
Military Police
Overall ratingNo reviews yet
Do It Again
Civilian Pay
$72K
31EArmy
Corrections and Detention Specialist
Overall ratingNo reviews yet
Do It Again
Civilian Pay
$72K
Head to Head
31A
31E
Getting In
ASVAB Line Scores
NOTE Officers qualify via commissioning source (OCS/ROTC/USMA), not ASVAB line scores
ST 91
Clearance
Secret
Pay Grade
Officer
Enlisted
Training
Training Length
16 wk
8 wk
Pipeline Type
OCS, ROTC, or USMA
Basic Combat Training
Training Location
Fort Leonard Wood, MO
Fort Leonard Wood, MO
Day-to-Day
Promotion Speed
Average
Deployment Tempo
Moderate
Career Field
Military Police
Military Police
After You Get Out
Civilian Median Pay
$72K
$72K
Top Civilian Career
Police and Sheriff's Patrol Officers
Police and Sheriff's Patrol Officers
Credentials Earned
3 certs

After the Uniform

The part the recruiter skips: what each job actually translates to once you're a civilian — and what it pays.

31AMilitary Police
Civilian Median Pay
$72K/yr
What It Becomes on the Outside
Police and Sheriff's Patrol OfficersStrong
Job market: Faster than average (5%)
$72K
First-Line Supervisors of Police and DetectivesStrong
Correctional Officers and JailersRelated
Job market: Declining (-6%)
$50K
Private Detectives and InvestigatorsRelated
Job market: Faster than average (6%)
$59K
Credentials You Walk Away With
Military Police Officer certificationLaw enforcement leadership certificationsVarious security management certifications
31ECorrections and Detention Specialist
Civilian Median Pay
$72K/yr
What It Becomes on the Outside
Police and Sheriff's Patrol OfficersStrong
Job market: Faster than average (5%)
$72K
Correctional Officers and JailersStrong
Correctional Officers and JailersRelated
Job market: Declining (-6%)
$50K
Private Detectives and InvestigatorsRelated
Job market: Faster than average (6%)
$59K

Salary data from the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics program. A guide, not a guarantee.

Recruiter vs. Reality

The pitch versus what people who actually did the job report back.

31AMilitary Police
What the Recruiter Says

You'll lead military police soldiers in law enforcement, force protection, and combat support operations — a branch that does more in a single deployment than most civilian police officers see in a career. After MP BOLC at Fort Leonard Wood, your assignments will span installation law enforcement, detainee operations, and combat zone security, often simultaneously. FBI, DEA, ATF, and Secret Service actively recruit MP officers. The federal law enforcement pathway from this branch is one of the clearest in the Army, and the security clearance plus the leadership experience accelerates it significantly.

What It's Actually Like

MP officers command units that do genuinely diverse missions — law enforcement on installations, detainee operations, police intelligence, area security, and combat support functions that put MPs in the middle of complex operational environments. The tension in MP culture is between the law enforcement identity and the combat support identity, and which one dominates depends heavily on the assignment. The war on terror created a generation of MP officers with real combat and detainee operation experience that shaped the branch significantly. Law enforcement experience on Army installations is real — your soldiers are responding to the same calls civilian police respond to, in communities with elevated rates of domestic violence, substance abuse, and the other consequences of repeated deployments. Civilian law enforcement, security management, and federal LE agencies are well-trodden post-Army pathways. The DHS, CBP, and federal agency pipelines recruit MP officers seriously. The branch has a clearer civilian translation than most combat arms branches.

31ECorrections and Detention Specialist
What the Recruiter Says

You'll manage military detention and confinement operations — processing, guarding, and administering detained personnel in correctional facilities and EPW operations. It's not the most glamorous pitch, but corrections is a stable civilian career: federal Bureau of Prisons, state DOC systems, and county jails actively hire veterans with military corrections experience. Federal corrections positions offer strong pay and pension. If law enforcement and corrections align with your interests, this MOS gives you direct experience from day one.

What It's Actually Like

You run internment and resettlement facilities, which is the Army's way of saying detention operations — EPW camps, civilian internee facilities, detainee operations in support of operations. The work is not glamorous. You are responsible for the safety, security, and humane treatment of people who are in custody, in conditions that are frequently austere and sometimes contentious. The legal framework — Geneva Conventions, AR 190-8, applicable LOAC — is not optional reading; it is the structure that defines every decision you make. The moral weight of this work is real and is not adequately briefed at MEPS. Your guards and you will see things that require processing, and the Army's behavioral health support for 31E soldiers has historically been inconsistent. The professional skills — facility management, population control, use-of-force procedures, detainee tracking systems — transfer to corrections, federal detention (BOP, USMS), and security management. The federal corrections pipeline actively recruits veterans from detention backgrounds. The clearance, the discipline, and the specific experience with high-stress population management make 31E soldiers genuinely competitive for those positions.

The Real Life

Same dimensions, side by side. 31A on the left, 31E on the right.

Daily Life
31A

Leading military police platoons and companies — law enforcement operations, security operations, and detention operations. As a platoon leader: leading patrols, investigations support, and base security operations. As a company commander: managing multiple law enforcement and security missions simultaneously. The work blends traditional law enforcement with military operations.

31E

Training / School
31A

Military Police Basic Officer Leader Course (MPBOLC) at Fort Leonard Wood (MO) is about 18 weeks. Covers law enforcement, security operations, detention operations, and military police investigations. The training provides a foundation in both military and civilian law enforcement principles.

31E

Physical Demands
31A

Moderate. MP officers are expected to maintain combat arms-level fitness. The work involves both office leadership and field law enforcement operations.

31E

Where You'll Be Stationed
31A
Fort Leonard Wood (MO)Fort Liberty (NC)Fort Cavazos (TX)JBLM (WA)Most major installations
31E
The Honest Truth
31A

Military police officer is a branch that offers one of the most direct civilian career translations of any officer specialty. You lead law enforcement and security operations at a scale that civilian police officers rarely experience at the same career stage. What the branch briefer won't mention: a significant portion of the MP mission is base security — gate operations, access control, and traffic enforcement — which is not the most intellectually stimulating work. The interesting assignments (CID, protective services, special operations support) are competitive. The deployment experience is real and varied: detainee operations, area security, and route clearance support. The civilian career path is strong: federal law enforcement agencies, corporate security, and consulting firms all recruit MP officers. The combination of military leadership and law enforcement experience is a powerful credential.

31E

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