Israeli security forces gather at a petrol station following a suspected shooting attack near the town of Kokhav Yair in central Israel close to the occupied West Bank on June 7, 2026. One person was killed and four others wounded in multiple suspected shooting attacks in Israel on June 7, rescuers and the army said. (Photo by Jack GUEZ / AFP)

The U.S. army has outlined the key eligibility requirements for individuals seeking to enlist, including rules on citizenship, age, education, medical fitness and aptitude testing.

While both U.S. citizens and certain non-citizens are eligible to serve, prospective recruits must meet strict conditions before they can join any branch of the Armed Forces.

Green Card required for non-U.S. citizens to join army

According to the U.S. military, non-citizens cannot enlist unless they are lawful permanent residents of the United States.