Dozens of countries have military conscription in 2026. See which nations have mandatory service that can reach two years or more.

Almost all men aged 18-25 living in the United States are required to register with SSS. That includes U.S. citizens, legal and undocumented immigrants, dual nationals, and most disabled people. The only exceptions are for people who are incarcerated, confined to a medical facility or in the U.S. on a temporary non-immigrant visa.

The United States is moving toward an automatic military draft registration system. By December, eligible men will be automatically added to the draft pool. This change was mandated last December as part of the National Defense Authorization Act.