Custer, Wisconsin Custer, Wisconsin Custer is an unincorporated community located in the town of Stockton, in Portage County, Wisconsin, United States. The origin of the communities name is not confirmed but general consensus is it was named after Lt. Col. George Armstrong Custer, who was defeated during the battle of the Little Big Horn in 1876. The Custer post office was established in December, 1876 just six months after the battle of Little Big Horn. The community was originally called "Dawson". The only evidence to where this name came from was an August 8, 1854 land deed marking the sale of a
George Armstrong Custer during the Manassas Campaign, where Army commander Winfield Scott detailed him to carry messages to Major General Irvin McDowell. After the battle, Custer continued participating in the defenses of Washington D.C. until October, when he became ill. He was absent from his unit until February 1862. In March, he participated with the 2nd Cavalry in the Peninsula Campaign (March to August) in Virginia until April 4. On April 5, Custer served in the 5th Cavalry Regiment and participated in the Siege of Yorktown, from April 5 to May 4 and was aide to Major General George B. McClellan; McClellan was