From Israel to South Korea: Countries with mandatory military service for people
The US is set to automatically register young men for the draft from December 2026, sparking fresh debate. But which countries actually require mandatory military service? This explainer breaks down global conscription systems, including nations like Israel, South Korea and Finland, and how they differ from voluntary armies.
A fresh debate has started after the United States announced a key change. From December 2026, eligible men will be automatically registered for the military draft at age 18, instead of signing up themselves. But this does not mean compulsory service has started again.
Still, the news has sparked a bigger question: which countries actually require citizens to serve in the army?
WHAT IS COMPULSORY MILITARY SERVICE?
Compulsory military service, also called conscription, means citizens are legally required to serve in the armed forces for a fixed period.
This is very different from countries like the US or India, where the military is mostly voluntary.
COUNTRIES WHERE MILITARY SERVICE IS MANDATORY
Many nations still enforce compulsory service, especially those facing security threats or with smaller populations.
ASIA
South Korea: Men must serve for about 18 to 21 months due to tensions with North Korea.
Israel: One of the few countries where both men and women serve.
Iran: Mandatory service for men, usually around 18 to 24 months
EUROPE
Switzerland: Men undergo military training and remain in reserve.
Norway: Gender-neutral conscription, but only a selected group serves.
Finland: Mandatory for men, with strong reserve forces.
Greece: Required for men due to regional security concerns.
OTHER REGIONS
Turkey: Mandatory service for men, though buyout options exist.
Singapore: Strict national service for all male citizens.
Brazil: Mandatory on paper, but only a small number are selected.
WHY DO SOME COUNTRIES MAKE IT COMPULSORY?
There are three main reasons:
- Security threats: Countries like South Korea and Israel face ongoing tensions.
- Small populations: Nations like Finland rely on reserves.
- National policy: Some countries see it as a way to build discipline and unity.
WHAT ABOUT THE UNITED STATES?
The US ended active conscription in 1973 and moved to an all-volunteer military.
Today, men aged 18 to 25 must still register in the Selective Service System, which acts as a backup database in case a draft is needed.
The new rule from December 2026 will automate this registration, but:
- It does not mean people will be forced to join immediately
- A real draft would still need approval from Congress and the President
WHY THIS TOPIC IS BACK IN THE NEWS
Rising tensions involving the US, Israel and Iran have brought military preparedness into focus again.
Even though a draft is not currently planned, policy changes like automatic registration show how countries keep systems ready for emergencies.
THE BIG PICTURE
Across the world, military service policies vary widely.
Some countries depend fully on volunteers. Others still require citizens to serve, often due to geography, politics or history.
So when you hear about “mandatory army service,” it is not a global rule. It depends entirely on where you are.