 Sikh temples have also been targets of violence due to being mistaken for mosques.A 2012 shooting at a Sikh temple in Oak Creek, Wisconsin garnered national and international attention, with then President Obama ordering flags to be half-staffed at all federal buildings.Sikhs have served in the United States military at least as far back as the early 20th century, when one Bhagat Singh Thind, who though not a citizen joined the United States Army and served in World War I. Thind requested citizenship at the end of the war, being granted and revoked twice, before finally being naturalized in 1936.