Clara Barton was working as a recording clerk in the U.S. Patent Office in Washington, D.C. when the first units of federal troops poured into the city in 1861. The war had just begun, the troops were newly recruited, and residents in the capital were alarmed and confused. Barton perceived an immediate need in all this chaos for providing personal assistance to the men in uniform, some of whom were already wounded, many hungry, and some without bedding or any clothing except what they had on their backs. She started by taking supplies to the young men of the Sixth Massachusetts Infantry who had been attacked in Baltimore, Maryland, by southern sympathizers and were temporarily housed in the unfinished Capitol building. Barton quickly discovered that many were "her boys," as she put it; she had grown up with some of them and some she had even taught. Like a few other women, Barton provided clothing and assorted foods and supplies to the sick and wounded soldiers on behalf of such organizations as the U.S. Sanitary Commission, although she never formally affiliated with any agency or group.