This page in your language
فارسی العربية Deutsch Español Français 日本語 한국어 Português 中文 हिन्दी
B1 noun #3,000 most common 5 min read

군사

At the A1 level, you don't need to use '군사' (military affairs) often. You might see it in simple news headlines or picture books about history. Think of it as a big word for 'army things.' You might learn that Korea has an army, and that's related to '군사.' It's more important at this level to know '군인' (soldier) or '군대' (army). If you see '군사,' just remember it means something about the soldiers and their work. It's a formal word, so you won't use it to talk to your friends about your day, but you might see it on a sign near a restricted area that says '군사 지역' (Military Area).
At the A2 level, you can start to recognize '군사' in compound words. You might learn about '군사 훈련' (military training) because it's a common topic in Korean culture, as many Korean men go to the army. You can understand simple sentences like '그는 군사 학교에 다녀요' (He goes to a military school). You are beginning to see the difference between the person (군인) and the general topic (군사). You might also see it in historical contexts, like '옛날 군사들' (soldiers of the past). It's a useful word to know when reading basic news summaries about peace or security on the Korean peninsula.
At the B1 level, you should be able to use '군사' in discussions about society and politics. You can explain that two countries are having '군사 협력' (military cooperation) or that there is '군사적 긴장' (military tension). You understand that '군사' is a formal noun used for 'military affairs.' You can use it to describe the reason for certain government actions. For example, '군사적인 이유로 그곳에 갈 수 없습니다' (I cannot go there for military reasons). You are also becoming familiar with the Hanja (軍 - army, 事 - matter), which helps you remember that this word is about the 'business' or 'affairs' of the army.
At the B2 level, you can use '군사' to discuss complex topics like '군사력' (military power) and its impact on international relations. You can distinguish between '군사' (affairs), '군수' (logistics), and '국방' (defense). You are comfortable reading news articles that use terms like '군사 도발' (military provocation) or '군사적 균형' (military balance). You can participate in debates about whether a country should increase its '군사 예산' (military budget). You understand the nuance of using '-적' to turn it into an adjective, and you can use it naturally in written essays about history or current events.
At the C1 level, you have a deep understanding of '군사' in various contexts, including legal, historical, and geopolitical. You can discuss '군사 정권' (military regimes) in the context of Korean modern history with appropriate vocabulary. You understand specialized terms like '군사 법원' (military court) or '군사 기밀 보호법' (Military Secret Protection Act). You can analyze the rhetoric used in '군사 외교' (military diplomacy) and understand how military affairs intersect with economic and technological sectors. Your usage is precise, and you can explain the historical evolution of the word from meaning 'soldiers' to meaning 'military affairs.'
At the C2 level, you possess a near-native grasp of '군사' and can use it in academic research or high-level policy discussions. You can navigate the complexities of '군사 안보 패러다임' (military security paradigms) and '군사적 비대칭성' (military asymmetry). You are capable of interpreting classical texts where '군사' might be used in archaic ways. You can write sophisticated critiques of '군사주의' (militarism) or analyze the '군사-산업 복합체' (military-industrial complex). You understand the subtle emotional and political connotations the word carries in the context of the North-South Korean relationship and can use it to articulate nuanced perspectives on global security.
Practice it Examples Notes & Tips

군사 in 30 Seconds

  • 군사 (Gun-sa) is a formal noun meaning 'military affairs,' encompassing strategy, technology, and the overall business of national defense and armed forces.
  • Derived from Hanja (軍 army + 事 matter), it is primarily used in compound nouns like '군사 훈련' (military training) and '군사력' (military power).
  • Unlike '군대' (the organization) or '군인' (the person), '군사' refers to the abstract field or specific activities of the military sector.
  • It is a high-frequency word in Korean news, history, and political discussions, especially regarding the security situation on the Korean peninsula.

The Korean word 군사 (軍事) is a comprehensive noun that encapsulates everything related to the armed forces, warfare, and the strategic management of a nation's defense capabilities. At its core, the term is composed of two Hanja characters: 軍 (군) meaning 'army' or 'military' and 事 (사) meaning 'matter,' 'affair,' or 'work.' Together, they literally translate to 'military affairs.' This word is not just about soldiers (who are specifically called 군인), but rather the entire infrastructure, strategy, and socio-political implications of military power.

Strategic Dimension
It refers to the high-level planning, logistics, and tactical decisions made by a state. When news outlets discuss 'military tension' (군사적 긴장), they are referring to the geopolitical climate involving armed forces.
Technical Dimension
This covers the technology, weaponry, and equipment used by the army. 'Military technology' (군사 기술) is a common phrase used in industrial and scientific contexts.
Historical Dimension
In historical dramas (Sageuk), 군사 can sometimes refer to the soldiers themselves as a collective unit, though in modern Korean, this usage is less common than the abstract 'affairs' meaning.

"두 나라는 군사 협력을 강화하기로 합의했습니다." (The two countries agreed to strengthen military cooperation.)

— Example of diplomatic usage

"군사 분계선을 넘는 것은 매우 위험한 일입니다." (Crossing the military demarcation line is a very dangerous thing.)

Modern Usage
In the 21st century, the term has expanded to include cyber-warfare (사이버 군사 작전) and space-based defense systems, showing that the 'affairs' of the military are constantly evolving.

"그 지역은 군사 기밀로 분류되어 접근이 불가능합니다." (That area is classified as military secrets, so access is impossible.)

Using 군사 correctly requires understanding its role as a prefix or a noun that describes a category of action. It is rarely used alone as a subject in casual conversation but is ubiquitous in formal, journalistic, and academic writing. It functions primarily to categorize a noun as being related to the defense sector.

1. As a Compound Noun Prefix

Most commonly, 군사 attaches to other nouns to create specific terms:

  • 군사 훈련 (Military Training): Used for drills and exercises.
  • 군사 전략 (Military Strategy): Used in historical or political analysis.
  • 군사력 (Military Power): Referring to the strength or capacity of a nation's forces.
  • 군사 정권 (Military Regime): Referring to historical periods of military rule.

2. Adjectival Form: 군사적

To say 'military' as an adjective (e.g., 'military purpose'), you often add the suffix -적. For example, 군사적 목적 (military purpose) or 군사적 도발 (military provocation).

"그들은 군사적 충돌을 피하기 위해 노력하고 있습니다." (They are working to avoid a military clash.)

3. Formal vs. Informal

In informal settings, people might just say 군대 문제 (army problems), but in any professional or news-related context, 군사 is the standard. It carries a tone of seriousness and institutional scale.

You will encounter 군사 in several specific environments in Korea, reflecting the country's unique geopolitical situation.

1. News and Media
Every evening news broadcast in Korea likely mentions '군사' at least once, whether discussing North Korean relations, US-ROK joint exercises, or global conflicts like those in Ukraine or the Middle East.
2. Historical Dramas (Sageuk)
In dramas set in the Joseon or Goryeo dynasties, generals often shout about '군사' to mean their troops. "군사를 물려라!" (Withdraw the troops!) is a classic line.
3. Political Debates
Discussions regarding the national budget, mandatory conscription, or diplomatic treaties frequently revolve around '군사력' (military power) and '군사 안보' (military security).

"오늘의 주요 뉴스는 한미 군사 연습의 시작입니다." (Today's main news is the start of the ROK-US military exercises.)

Furthermore, in video games (especially RTS games like StarCraft, which is legendary in Korea), terms like 군사 유닛 (military units) or 군사 건물 (military buildings) are standard terminology.

Learners often confuse 군사 with other words related to the army. Here are the most common pitfalls:

  • Mistake 1: Using '군사' for 'The Army' (Organization)

    Wrong: "나는 군사에 가요." (I'm going to the military affairs.)

    Correct: "나는 군대에 가요." (I'm going to the army/military.)

  • Mistake 2: Using '군사' for a single soldier

    Wrong: "그 군사는 용감해요." (That military affair is brave.)

    Correct: "그 군인은 용감해요." (That soldier is brave.)

  • Mistake 3: Confusing with '군수' (Logistics/County Governor)

    '군수' (軍需) refers specifically to military supplies or logistics, or a local government head. Don't mix them up in a supply-chain context.

Understanding the nuances between 군사 and its synonyms will elevate your Korean proficiency from intermediate to advanced.

국방 (國防 - National Defense)
Focuses on the protection of the country. Used in 'Ministry of National Defense' (국방부). While 군사 is about the 'how' of the military, 국방 is about the 'purpose' (defending the nation).
병역 (兵役 - Military Service)
Refers specifically to the duty of serving in the military. Used when talking about conscription or 'fulfilling one's service' (병역 이행).
무력 (武力 - Armed Force/Might)
Focuses on the physical force or violence aspect. "무력 충돌" (armed conflict) emphasizes the actual fighting and use of weapons.
전쟁 (戰爭 - War)
The actual state of large-scale conflict. 군사 is the broader category that includes the preparation for and management of 전쟁.

"국방 예산이 작년보다 증액되었습니다." (The national defense budget has been increased from last year.)

How Formal Is It?

Formal

""

Informal

""

Difficulty Rating

Grammar to Know

Examples by Level

1

군사 박물관에 가요.

I go to the military museum.

Noun + 에 가요 (Destination particle)

2

군사 영화를 봐요.

I watch a military movie.

Noun + 을/를 (Object particle)

3

군사 옷이 멋있어요.

The military clothes (uniform) are cool.

Subject marker -이/가

4

여기는 군사 지역이에요.

This is a military area.

Polite ending -이에요

5

군사 장난감이 있어요.

There are military toys.

Existence verb -있어요

6

군사 공부를 해요.

I study military (history/affairs).

Action verb -해요

7

군사 기지가 커요.

The military base is big.

Adjective -커요

8

군사 소식이 있어요.

There is military news.

Noun + 소식 (News)

1

군사 훈련이 내일부터 시작됩니다.

Military training starts from tomorrow.

Formal ending -습니다

2

그는 군사 학교를 졸업했어요.

He graduated from a military school.

Past tense -았/었/였어요

3

군사 전문가를 만났어요.

I met a military expert.

Noun + 전문가 (Expert)

4

군사 박물관은 월요일에 쉽니다.

The military museum is closed on Mondays.

Topic marker -은/는

5

군사 기술이 아주 발전했어요.

Military technology has developed a lot.

Adverb 아주 (Very)

6

군사 작전이 성공했습니다.

The military operation was successful.

Noun + 작전 (Operation)

7

군사 지도를 보고 있어요.

I am looking at a military map.

Progressive -고 있어요

8

군사력을 키워야 합니다.

We must increase military power.

Obligation -아/어/여야 합니다

1

양국은 군사 협력을 강화하기로 했습니다.

Both countries decided to strengthen military cooperation.

Decision -기로 하다

2

군사적 긴장이 높아지고 있습니다.

Military tension is rising.

Change of state -아/어지다

3

군사 기밀을 유출하면 안 됩니다.

You must not leak military secrets.

Prohibition -(으)면 안 되다

4

그 지역은 군사 보호 구역입니다.

That area is a military protection zone.

Noun + 보호 구역 (Protection zone)

5

군사 훈련 중에 사고가 났어요.

An accident happened during military training.

During -중에

6

군사 목적으로 사용되는 건물입니다.

It is a building used for military purposes.

Passive/Modifier -되는

7

군사력을 바탕으로 평화를 유지합니다.

Peace is maintained based on military power.

Based on -을/를 바탕으로

8

군사 전문가의 의견을 들어봅시다.

Let's listen to the military expert's opinion.

Suggestion -아/어 봅시다

1

군사적 도발에 강력히 대응해야 합니다.

We must respond strongly to military provocations.

Adverbial -히

2

군사 정권 시절의 역사를 배웠습니다.

I learned about the history of the military regime era.

Noun + 시절 (Era)

3

군사 분계선 부근은 출입이 통제됩니다.

Access is controlled near the military demarcation line.

Passive -되다

4

군사 원조를 통해 동맹을 강화합니다.

Strengthen the alliance through military aid.

Through -을/를 통해

5

군사적 우위를 점하는 것이 중요합니다.

It is important to occupy a position of military superiority.

Gerund -는 것

6

군사 위성으로 적의 움직임을 감시합니다.

Monitor the enemy's movement with a military satellite.

Instrumental -으로

7

군사 예산 삭감에 대한 논란이 있습니다.

There is a controversy over the cutting of the military budget.

About -에 대한

8

군사적 충돌의 위험이 상존하고 있습니다.

The danger of military conflict always exists.

Always existing -상존하다

1

군사적 긴장 완화를 위한 회담이 열렸습니다.

A meeting was held to ease military tension.

For the purpose of -을/를 위한

2

군사 기밀 보호법 위반으로 처벌받았습니다.

He was punished for violating the Military Secret Protection Act.

Cause/Reason -으로

3

군사-산업 복합체의 영향력이 커지고 있습니다.

The influence of the military-industrial complex is growing.

Progressive -고 있다

4

군사적 개입은 신중하게 결정해야 합니다.

Military intervention must be decided carefully.

Adverbial -게

5

군사력 증강이 지역 안보에 미치는 영향.

The impact of military buildup on regional security.

Relative clause -는

6

군사적 대치 상태가 장기간 지속되었습니다.

The state of military confrontation lasted for a long time.

Duration -간

7

군사 법원의 판결에 불복하여 항소했습니다.

He appealed, dissatisfied with the military court's ruling.

Dissatisfaction -불복하여

8

군사적 비대칭성을 극복하기 위한 전략입니다.

It is a strategy to overcome military asymmetry.

In order to -(으)기 위한

1

군사적 패권주의는 국제 사회의 지탄을 받습니다.

Military hegemonism is criticized by the international community.

Passive -받다

2

군사적 억제력을 확보하는 것이 안보의 핵심입니다.

Securing military deterrence is the core of security.

Topic -은/는

3

군사적 수단만으로는 평화를 담보할 수 없습니다.

Peace cannot be guaranteed by military means alone.

Limitation -만으로는

4

군사적 도발에 대한 즉각적이고 단호한 응징.

Immediate and firm punishment for military provocations.

Adjective -ㄴ/은

5

군사 안보 패러다임의 전환이 요구되는 시점입니다.

It is a time when a shift in the military security paradigm is required.

Passive/Required -요구되는

6

군사적 긴장감이 고조되자 시장이 요동쳤습니다.

As military tension heightened, the market fluctuated.

Reason/Sequence -자

7

군사적 중립을 유지하는 것은 매우 까다로운 일입니다.

Maintaining military neutrality is a very tricky task.

Gerund -는 것

8

군사적 충돌 가능성을 배제할 수 없는 상황입니다.

It is a situation where the possibility of military conflict cannot be ruled out.

Possibility -ㄹ 수 없는

Common Collocations

군사 훈련 (Military training)
군사 협력 (Military cooperation)
군사 기밀 (Military secret)
군사 정권 (Military regime)
군사 도발 (Military provocation)
군사 원조 (Military aid)
군사 작전 (Military operation)
군사 기지 (Military base)
군사 전문가 (Military expert)
군사 분계선 (Military demarcation line)

Common Phrases

군사적 긴장 (Military tension)

군사력을 강화하다 (Strengthen military power)

군사 개입 (Military intervention)

군사적 목적 (Military purpose)

군사적 우위 (Military superiority)

군사 시설 (Military facilities)

군사 안보 (Military security)

군사 기술 (Military technology)

군사 동맹 (Military alliance)

군사적 충돌 (Military clash)

Often Confused With

군사 vs 군인 (Soldier - the person)

군사 vs 군대 (Army - the place/organization)

군사 vs 군수 (Logistics/Supplies)

Idioms & Expressions

""

""

""

""

""

""

""

""

""

""

Easily Confused

군사 vs

군사 vs

군사 vs

군사 vs

군사 vs

Sentence Patterns

How to Use It

Modern

Now it almost exclusively means 'military affairs' or 'military-related.'

Historical

In old texts, 군사 meant 'soldiers.'

Common Mistakes
  • Using '군사' to mean 'I joined the army.'
  • Confusing '군사' with '군인' (soldier).
  • Mispronouncing '군' as '권'.
  • Using '군사' in a casual setting where '군대' is more appropriate.
  • Forgetting to use '-적' when an adjective is needed.

Tips

Learn Compounds

Instead of learning '군사' alone, learn '군사 훈련' and '군사력' together.

News Watching

Watch Korean news to hear how '군사' is used in geopolitical contexts.

Root Study

Knowing that '사' means 'affair' helps you understand other words like '행사' (event).

Use -적

Use '군사적' before nouns to describe them as military-related.

Respect Context

Understand that military topics are sensitive in Korea due to history.

Drama Clues

In Sageuks, '군사' often refers to the troops following a general.

Formal Tone

Use this word when you want to sound more educated or serious.

Headline Scan

Scan news headlines for '군사' to quickly find security-related articles.

Association

Associate '군사' with 'strategy' rather than just 'fighting'.

Noun Stacking

Korean often stacks nouns like '군사 협력 회담' (Military cooperation meeting).

Memorize It

Word Origin

Sino-Korean word used for centuries to describe the management of troops and defense.

Cultural Context

The Demilitarized Zone is the most famous '군사' related location in Korea.

Historical dramas often use '군사' to refer to the soldiers of the king.

All able-bodied South Korean men must serve, making military terminology common knowledge.

Practice in Real Life

Real-World Contexts

Conversation Starters

"요즘 군사적 긴장에 대해 어떻게 생각하세요? (What do you think about the military tension lately?)"

"군사 영화를 좋아하시나요? (Do you like military movies?)"

"한국의 군사 박물관에 가본 적 있어요? (Have you ever been to a military museum in Korea?)"

"군사 기술이 미래를 어떻게 바꿀까요? (How will military technology change the future?)"

"군사 훈련 소식을 들었나요? (Did you hear the news about the military training?)"

Journal Prompts

평화와 군사력의 관계에 대해 써보세요. (Write about the relationship between peace and military power.)

군사 박물관을 방문한다면 무엇을 보고 싶나요? (If you visit a military museum, what do you want to see?)

군사 기술의 발전이 우리 삶에 미치는 영향. (The impact of military technology development on our lives.)

역사 속의 유명한 군사 전략가에 대해 설명해보세요. (Explain a famous military strategist in history.)

군사적 갈등을 해결하는 가장 좋은 방법은 무엇일까요? (What is the best way to resolve military conflicts?)

Frequently Asked Questions

10 questions

In modern Korean, no. It means 'military affairs.' In historical contexts, it can mean 'soldiers.'

군대 is the physical organization (The Army), while 군사 is the abstract field (Military affairs).

You say '군사 훈련' (Gun-sa Hun-ryeon).

Yes, it is primarily used in formal, journalistic, and academic settings.

Yes, but usually when discussing the news or history, not your personal life.

It is the adjectival form, meaning 'military' (e.g., military purpose).

Yes, 軍 (Army) and 事 (Matter).

It is '군사 기밀' (Gun-sa Gi-mil).

Yes, it is a very common term in North Korean media as well.

You say '군사력' (Gun-sa-ryeok).

Test Yourself 180 questions

/ 180 correct

Perfect score!

Related Content

Was this helpful?

Comments (0)

Login to Comment
No comments yet. Be the first to share your thoughts!