Augustus Gabriel de Vivier Tassin

Augustus Gabriel de Vivier Tassin (1842–1893) was a French-born American soldier who served in the Union Army during the American Civil War. After the war he occupied a variety of posts in the American West. He made notable contributions in writing descriptive accounts of several Native American groups.

Tassin was born in Paris, France, on October 12, 1842 but immigrated to the United States, at New Orleans Louisiana, on October 25, 1852. When the Civil War broke out, he was living in Leopold, Indiana. He enlisted as a first lieutenant in the 35th Indiana Infantry Regiment on September 15, 1861. During the war he rose to the rank of full colonel, with distinguished service in the Battle of Missionary Ridge in Tennessee and the campaigns for Atlanta and Nashville. In December 1870, he voluntarily left the American army in order to serve with the French military during the Franco-Prussian War. When he returned, Tassin reenlisted, rising from the rank of private to second lieutenant, first lieutenant, and captain. He was assigned to various military posts in California, Arizona Territory, and the Dakotas, as well as in New York, Virginia, and Washington, D.C.. He was the Indian agent at the Colorado River Indian Agency in Parker, Arizona, when he died on October 19, 1893.

...
Wikipedia