Colonel

Colonel

Colonel , abbreviated Col or COL, is a military rank of a senior commissioned officer. It or a corresponding rank exists in most armies and in many air forces; the naval equivalent rank is generally "Captain". It is also used in some police forces and other paramilitary rank structures...

 Marcus M. Spiegel (1829 or 1830 to May 4, 1864) was a Jewish officer who served in the 67th and 120th Ohio Volunteer Infantry for the Union Army

Union Army

The Union Army was the land force that fought for the Union during the American Civil War. It was also known as the Federal Army, the U.S. Army, the Northern Army and the National Army...

 in the American Civil War

American Civil War

The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

. During the course of the war he became a staunch abolitionist and in one of his letters wrote "I am [in] favor of doing away with the institution of Slavery...never hereafter will I either speak or vote in favor of Slavery; this is no hasty conclusion but a deep conviction."