Civil War Union Brevet Brigadier General. After graduating from Dartmouth in his native state of New Hampshire, he moved out west, and settled in Wisconsin. Active in politics and the military, he was made a Colonel of Wisconsin Militia and served as a County Judge. After the start of the Civil War, he was appointed and commissioned as Lieutenant Colonel of the 10th Wisconsin Volunteer Infantry, with whom he served until July 25, 1862, when he was promoted to Colonel and transferred to command the 23rd Wisconsin Volunteer Infantry (which were nicknamed the “Guppey Guards”). His service with the 10th brought him into operations in Kentucky and Tennessee, mostly against Confederate partisans and guerillas. While in the field in 1862, he ran for Congress back home as the Democratic candidate, but was defeated by over 2,000 votes. With the 23rd he returned to the Western Theatre of the War, serving first in Louisiana, Arkansas (where his troops help capture Fort Hindman) and Mississippi before joining the Union operations against Vicksburg. In the early part of May 1863 he led his unit in the capture of Port Gibson, Mississippi, where the 23rd Wisconsin was the first Union troops to enter the city. In the battles for Vicksburg, he commanded his unit at the Battle of Champion’s Hill, where it fended off a number of Confederate flanking moves. His second in command during the Battle was Lieutenant Colonel William F. Vilas, who would become a United States Senator after the War. After participating in the Red River Campaign, he assumed command of a Brigade, which he led during the combined Army-Navy operations against Mobile, Alabama in August 1864. On March 13, 1865, he was brevetted Brigadier General, US Volunteers on for “gallant and meritorious services during the war”. Returning to Wisconsin, he served as Columbia County Superintendent of Schools. He died in Portage, Wisconsin at age 73 in 1893, and was returned to his native New Hampshire to be buried in his family’s plot.