US Army Lures Foreigners with Promise of Citizenship More than 30,000 foreign troops are enlisted in the US Army, many of them serving in Iraq. Their reward for risking their lives for their adopted country is US citizenship. When Anna Maria Clarke, 26, was a teenager living in the western German city of Mannheim, she already had a weakness for smart uniforms, particularly on American soldiers, and for war movies like "Full Metal Jacket." It was an attraction that Clarke, a German citizen, felt early on and still feels today.