John Charles Black was a Democratic U.S. Congressman and received the Medal of Honor for his actions as a Union Army lieutenant colonel and regimental commander at the Battle of Prairie Grove during the American Civil War.

On April 14, 1861, Black (along with his brother, William P. Black) entered the Union Army as a private in the 11th Indiana Volunteer Infantry Regiment on April 14, 1861. He became sergeant major on April 25, 1861.

After three months of service, the brothers were mustered out of the volunteers and organized Company “K” of the 37th Illinois Volunteer Infantry Regiment. John Black became major of the regiment on September 5, 1861. He was wounded in the right arm at the Battle of Pea Ridge, Arkansas, on March 7, 1862. In July 12, 1862, John Black was promoted to the rank of lieutenant colonel and became commander of the 37th Illinois Infantry. Black led his regiment against a fortified Confederate position during the Battle of Prairie Grove, Arkansas on December 7, 1862. The unit suffered heavy casualties and was eventually forced to retreat. Black himself was seriously wounded. An 1896 review of numerous actions during the war resulted in John Black being awarded the Medal of Honor for his actions at Prairie Grove. Black’s brother William also received the medal, making them the first of five pairs of brothers to both receive the Medal of Honor as of 2005.

On December 31, 1862, Black was promoted to colonel of the 37th Illinois Infantry Regiment. He was given temporary command of Brigade 1, Division 2, XIII Corps, Department of the Gulf, between November 11, 1863 and February 11, 1864, of Brigade 3, Division 2, Reserve Corps of the Department of the Gulf between February 3, 1865 and February 18, 1865. and of Brigade 3 Division 2, XIII Corps, Department of the Gulf, between February 18, 1865 and March 5, 1865.

Black resigned his commission in the volunteer service on August 15, 1865. On January 13, 1866, President Andrew Johnson nominated Black for appointment to the grade of brevet brigadier general of volunteers to rank from April 9, 1865, for gallant services in the assault on Fort Blakeley, Alabama on that date, and the U.S. Senate confirmed the appointment on March 12, 1866.