Alexander Schimmelfennig
Alexander Schimmelfennig was a German soldier and political revolutionary then he became a Union Army general in the American Civil War.
Schimmelfennig was born in Bromberg in the Prussian Province of Posen. He enrolled in the military and served in both the 29th Infantry Regiment and the 16th Infantry Regiment , which was stationed in Cologne, Germany. There, he became acquainted with some of the more radical German political sources. He was very supportive of the 1848 revolution, but came disillusioned with the outcome of the peace treaty that ended the SchleswigHolstein War of 1848.
Source: Wikipedia