If you live in Korea, sooner or later someone around you finishes their military service. A coworker comes back to the office after "jeonyeok," your Korean partner's younger brother is about to "jedae," a friend working at a district office talks about his "sojip haeje," and the news mentions a general who "toeyeok-ed." All of these seem to describe the same thing — leaving the military — yet Koreans sometimes correct each other on which word is right.
The short answer: these are not right and wrong versions of one word. Korean law gives the end of service different names depending on who is serving (an enlisted soldier or an officer, an active-duty soldier or a social service agent) and where that person's status moves next. This guide explains each term using the vocabulary of Korea's Military Service Act, the Military Personnel Management Act and the Act on Support for Discharged Soldiers, then maps them to every service type in one table.
1. The key idea: military service ends by changing category
Korean military service is divided into categories called yeokjong (역종): active duty, reserve, supplementary service and others. When someone finishes active service, their obligation does not simply vanish. They move from one category to another. That is why most official terms contain the character 轉 (jeon, "to shift").
| Term | Korean (Hanja) | Precise meaning | Typically used for | Official? |
|---|---|---|---|---|
| Jeonyeok | 전역 (轉役) | Moving from active duty to the reserve or another category | Enlisted soldiers, officers, NCOs | Official legal term |
| Jedae | 제대 (除隊) | Everyday word for "leaving the unit" | Soldiers in general (spoken) | Colloquial; survives in a law's name |
| Yepyeon | 예편 (豫編) | Being transferred to the reserve | Officers, warrant officers, NCOs | A form of officer discharge |
| Toeyeok | 퇴역 (退役) | Leaving military status entirely, without remaining a reservist | Career officers and NCOs (e.g. retirement age) | A form of officer discharge |
| Sojip haeje | 소집해제 (召集解除) | Release from a "call-up" style of service | Social service agents, full-time reservists, alternative service | Official term in the Military Service Act |
With this table alone, most confusion disappears. Jeonyeok is the umbrella term; yepyeon and toeyeok are specific forms of discharge for officers; sojip haeje applies to people whose service began with a call-up (sojip) rather than an enlistment.
2. Jedae vs jeonyeok: the same event, different registers
Jedae and jeonyeok describe exactly the same moment. The difference is register. Jedae is the everyday phrase, while jeonyeok is the legal one used by the Military Service Act, the Ministry of National Defense and the Military Manpower Administration (MMA). Young Koreans who have served tend to say jeonyeok; parents and grandparents often say jedae.
Jedae is not wrong, though. The law that supports former service members is literally called the Act on Support for Discharged Soldiers (제대군인 지원에 관한 법률), and it calls people who served and then left the military jedae gunin ("discharged soldiers"). So the act of leaving is jeonyeok, while the group of people who have left is still called jedae gunin. In conversation either word works; on a résumé or official document, use jeonyeok.
3. What each service type calls its last day
This is the part most people actually need. The same duty of military service ends under different names depending on the type of service. Durations reflect the current rules after Korea finished shortening service in 2020.
| Service type | How it starts | Official word for the end | Legal service period | Status afterward |
|---|---|---|---|---|
| Army / Marine Corps enlisted | Enlistment | Jeonyeok (full-term) | 18 months | Reserve |
| Navy enlisted | Enlistment | Jeonyeok | 20 months | Reserve |
| Air Force enlisted | Enlistment | Jeonyeok | 21 months | Reserve |
| Full-time reservist (sanggeun yebiyeok) | Enlistment, then call-up | Sojip haeje | 18 months | Reserve |
| Social service agent (sahoe bokmu yowon) | Call-up | Sojip haeje | 21 months | Supplementary service |
| Alternative service | Call-up | Sojip haeje | 36 months | Alternative service |
| Officers / NCOs finishing mandatory term | Commission | Jeonyeok (yepyeon) | Depends on commission | Reserve |
| Career officers / NCOs at retirement age | Commission | Jeonyeok (toeyeok) | Age, years or rank limit | Retired, not reserve |
Two points cause the most confusion. Full-time reservists enlist and train like active soldiers, but then commute from home and serve as a call-up, so their service ends with sojip haeje. Social service agents are never soldiers at all; they serve in supplementary status at public offices or welfare facilities, so jeonyeok is not the correct word for them. If your boyfriend works as a social service agent, "congratulations on your sojip haeje" is the accurate greeting.
4. Toeyeok vs jeonyeok, and what yepyeon means
Toeyeok and yepyeon are not used for enlisted soldiers. The Military Personnel Management Act divides the ways officers, warrant officers and NCOs leave active duty into transfer to the reserve (yepyeon), transfer to supplementary service, retirement (toeyeok) and exemption. All of these fall under the broad umbrella of jeonyeok.
- Yepyeon: A short-term officer (for example, a ROTC officer) or NCO who completes the mandatory term and moves to the reserve. "He was yepyeon-ed as a first lieutenant" means he left active duty at that rank and became a reserve officer.
- Toeyeok: A career service member who reaches the limit for age, years of service or rank and leaves military status entirely instead of becoming a reservist. Phrases like "retired general" (toeyeok janggun) come from here.
So the difference between toeyeok and jeonyeok is scope. Jeonyeok is the broadest term; toeyeok is one specific form of it. Calling an 18-month conscript's discharge toeyeok sounds odd, while a master sergeant leaving after 30 years can accurately be described that way.
5. Types of discharge: full-term, hardship, medical and honorable
Jeonyeok also gets a name based on why someone leaves. These are the ones families hear most often.
| Type | Reason | Applies to | Notes |
|---|---|---|---|
| Mangi jeonyeok (full-term) | Completed the legal service period | Enlisted soldiers, officers on mandatory terms | The most common type |
| Uigasa jeonyeok (hardship) | Family circumstances such as supporting relatives make continued service difficult | Enlisted soldiers | Under the Military Service Act's family-circumstance provision; requires review |
| Uibyeong jeonyeok (medical) | Illness, injury or mental or physical disability | Enlisted soldiers, officers | Decided after a military medical review |
| Myeongye jeonyeok (honorable early retirement) | A long-serving career member leaves voluntarily before the retirement limit | Career officers and NCOs | May qualify for an honorable retirement allowance |
| Unfit-for-service discharge | Found unfit for active duty, e.g. difficulty adapting | Enlisted soldiers, officers | Not the same as a so-called "dishonorable discharge" |
"Dishonorable discharge" (bulmyeongye jeonyeok) is a colloquial expression, not an official category under current law. Losing military status through disciplinary action or a criminal sentence is handled by a separate procedure called jejeok (removal), not jeonyeok. Being discharged as unfit for service should not automatically be read as dishonorable.
6. For foreigners in Korea: what changes for you
Most readers of this English page are not doing Korean military service themselves, but these words still come up at work, in relationships and in Korean families. A few practical notes:
- Conscription applies to Korean men, not to foreign residents. Korea's mandatory service is an obligation of male Korean nationals. If you hold a foreign passport and a Korean visa, these terms describe people around you, not you. If your situation involves Korean nationality — dual nationality, naturalization, or a Korean parent — the rules are specific to each case, so check directly with the Military Manpower Administration (MMA) rather than relying on general guides.
- Expect the "jeonyeok" date to matter at work. Many young Korean employees join a company right after discharge, and employers and HR forms ask for military service history. The official document Koreans use to prove service is the military service record certificate (byeongjeok jeungmyeongseo) issued by the MMA, which lists the category, service period and type of discharge.
- Use the right word with a Korean partner or in-laws. Saying jeonyeok for an active soldier and sojip haeje for a social service agent shows that you understand the system; it is a small detail that Korean families notice.
- Service lengths are fixed by branch. Army, Marine Corps and full-time reservists serve 18 months, the Navy 20 months, the Air Force 21 months, and social service agents 21 months. The end date is calculated as start date plus the number of months, minus one day.
7. How to calculate the discharge date: start date + months − 1 day
Once the terminology is clear, the next question is always "so when does he finish?" For enlisted soldiers and social service agents, the legal end date is the enlistment (or call-up) date plus the number of service months, minus one day.
| Example | Start date | Service period | Calculation | End date |
|---|---|---|---|---|
| Army enlisted | 2026-01-06 | 18 months | 2027-07-06 − 1 day | 2027-07-05 |
| Air Force enlisted | 2026-03-02 | 21 months | 2027-12-02 − 1 day | 2027-12-01 |
| Social service agent | 2026-05-11 | 21 months | 2028-02-11 − 1 day | 2028-02-10 |
This is the reference date based only on the legal service period. The day a soldier actually leaves the base is often earlier, because final leave (malnyeon hyuga) is usually taken right before discharge, and it can be later if there are disciplinary or service-interruption issues. For the exact date, the soldier's unit or service agency has the final word.
8. Frequently asked questions
Q1. Is it wrong to say "jedae"?
No. Jedae is the everyday word and jeonyeok is the legal term; both describe the same event, and the term jedae gunin still appears in the name of a law. In formal writing such as résumés or official documents, jeonyeok is the more precise choice.
Q2. Can a social service agent say "jeonyeok"?
Officially, the correct term is sojip haeje. Social service agents are called up to serve in supplementary status rather than enlisting as soldiers. People will understand jeonyeok in casual speech, but documents and the agents themselves use sojip haeje.
Q3. What is the difference between toeyeok and jeonyeok?
Jeonyeok is the broader term. Toeyeok usually refers to career officers or NCOs who leave at a retirement limit and exit military status completely instead of becoming reservists. It is not used for conscripts finishing 18 months.
Q4. Does a hardship or medical discharge end all military obligations?
Active duty ends, but the person's military service status does not necessarily disappear. Depending on the reason and the review outcome, they may be placed in supplementary service or another category, so later reserve training or other duties should be confirmed with the military service record certificate and MMA guidance.
9. Find the exact discharge (or sojip haeje) date with the calculator
Now that the words are clear, the remaining question is when your partner, coworker or family member actually finishes. Enter the enlistment or call-up date and choose the service type in the military discharge date calculator, and it applies the legal service period for the Army, Marine Corps, full-time reservists, Navy, Air Force or social service agents automatically. You get the discharge or sojip haeje date, days remaining, days served and a progress percentage on one screen — no more counting "start date + months − 1 day" by hand and ending up a day off.
To count down to another date, such as the start of final leave or a visit day, use the D-day calculator to see exactly how many days are left.
