Charles Henry De Groat (April 3, 1838 – August 15, 1904) was a colonel in the Union Army during the American Civil War who was nominated and confirmed for appointment to the grade of brevet brigadier general in 1866.

[1] De Groat later became Clerk of Fond du Lac County, Wisconsin.

The following year, he returned to Fond du Lac and raised the 32nd Wisconsin Volunteer Infantry Regiment.

In 1864, he was promoted to colonel and assumed command of the regiment during the Atlanta Campaign.

[3] On January 13, 1866, President Andrew Johnson nominated De Groat for appointment to the grade of brevet brigadier general of volunteers to rank from March 13, 1865, and the United States Senate confirmed the appointment on March 12, 1866.