Little Big Horn: Custer's Last Stand (1976)

From the box:

The realistic battle game which recreates the historic confrontation between George Armstrong Custer’s 7th U.S. Cavalry regiment and the several thousand Sioux, Cheyenne and other Indian warriors led by Sitting Bull, Crazy Horse and various other chiefs. It is once again June, 1876, and you are at the Battle of the Little Big Horn.

Contents: 280 counters, 7 7-hex Indian camps, 2 maps, & time record sheet