The United States army is to accept immigrants with temporary US visas, for the first time since the Vietnam war, according to the New York Times.
Until now immigrants have had to have permanent residency - a "green card" - in order to qualify for the services.
But those with temporary visas will be offered accelerated citizenship if they enrol, the Times says. The Pentagon hopes the scheme will cover shortages in areas like medical care and language interpretation.
Many temporary immigrants will have been granted visas on the basis of their education or skills, so the defence department expects the new recruits to be more qualified than applicants who are US citizens - and in particular to have languages useful in combat zones like Afghanistan and Iraq.
"The American army finds itself in a lot of different countries where cultural awareness is critical," said Lt-Gen Benjamin C Freakley, the top recruitment officer for the army.