They've been serving the country in uniform, but now they're officially U.S. citizens.
More than 20 military personnel took the oath of allegiance at a naturalization ceremony at the Pentagon.
A similar service in Iraq over the weekend welcomed 259 servicemen and women -- the largest naturalization ceremony ever held overseas.
Currently, about 40,000 non-citizens are filling the ranks.
Many are defending our country in Afghanistan and Iraq.
"May god bless each and every one of you in your continuing service to america. and, my most fervent prayer: may god continue to bless america with more like you," said Maj. Gen. James Graves.
After 9-11, President Bush signed an executive order that speeds up the citizenship process for foreign-born service members.
Since then, thousands have become citizens.