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Many of the largest Civil War monuments were built by Batterson, including The American Volunteer at Antietam National Cemetery (Carl Conrads, sculptor, George Keller, architect); and the Soldiers' National Monument at Gettysburg National Cemetery (Randolph Rogers, sculptor, George Keller, architect).
The American Volunteer Groups were volunteer air units organized by the United States government to aid the Nationalist government of China against Japan in the Second Sino-Japanese War.