Original Burial Site of US Army Officer and the brother-in-law of LTC George A. Custer and Captain Tom Custer. Original Burial Site of 1st Lt Calhoun, who was killed at the Battle of the Little Big Horn. Calhoun was the son of a merchant. He graduated from Mount Pleasant Academy, Sing Sing, NY on June 30, 1860. In June of 1860, Calhoun enlisted into the US Army at Ossining, NY. At the time of Calhoun's enlistment he was described as 5'-11", brown eyes and light hair. He listed civilian occupation was clerk. On February 22, 1865, Calhoun was assigned to Company D, 2nd Battalion, 14th Infantry Regiment at Harts Island, NY. On that same date. Calhoun's rank was listed as 1st Sgt. After the Civil War, Calhoun served at Fort Boise, Idaho Territory. Following his discharge from the army in 1867, Calhoun accepted a commission as a 2nd Lt with Company I, 32nd US Infantry Regiment at Camp Grant, Arizona Territory. On April 22, 1871, after being recommended by LTC Custer, Calhoun was promoted to 1st Lt and transferred to Company C, 7th US Cavalry Regiment. Company C was commanded by two time Medal of Honor recipient and LTC George A. Custer's brother, Captain Tom Custer. On March 7, 1872, Calhoun married the Custers' sister, Margret (Maggie) Emma Custer, in Monroe MI. They did not have any children. At the Battle of the Little Big Horn, Capt Custer was his brother's Aide-de-Camp. Therefore, Calhoun was in command of Company C during the battle. Calhoun was killed with his command on what was later called Calhoun Ridge. Based upon Lakota accounts and archeological research, it appears that Calhoun's company, under heavy fire, maintained their skirmish line in good order. After the battle, Lt Calhoun was found among his men and near the remains of 2nd Lt Crittenden on Calhoun Ridge. He was originally buried where he had died on the battlefield. In 1877, Lt Col Michael Sheridan (brother of Gen Phil Sheridan) led an expedition back to the Little Big Horn. Their objective was to cleanup the battlefield and disinter all known officer burial sites (except Lt John Crittenden). Lt Crittenden's parents had requested that their son remain buried on the battlefield with his men. Lt. Calhoun was reburied at the Fort Leavenworth National Cemetery in Kansas.