Indian Wars Algernon Emory Smith (September 17, 1842 – June 25, 1876) was an officer in the U.S. 7th Cavalry Regiment who was killed in the Battle of the Little Bighorn in the Montana Territory.

In June 1862, during the American Civil War, he enlisted in Company K, 7th U.S. Infantry Regiment.

He became a lieutenant in the 117th New York Volunteer Infantry until October 1863 when he was assigned to Maj. Gen. Alfred Terry as an aide-de-camp.

These changes were to result in Smith being killed at the Battle of the Little Bighorn and DeRudio surviving.

Smith's body was not found among his men, but instead was discovered with Custer in the small knot of dead troops on "Last Stand Hill."