Custer's last stand. Battlefield of Little Big Horn national monument. Tourist passes the monument marking the mass grave where the dead were reinterred. General George Armstrong Custer's marker indicates where his body was found following his death on June 25th, 1876. He and all his 210 cavalrymen of the 7th U.S. Cavalry were slaughtered by an estimated 2,000 Native American Indians led by Chief Crazy Horse following raids by the cavalry on their villages. Sept 2002.