Ronald Reagan played Custer in Santa Fe Trail in 1940. Others include Bugles in the Afternoon (1952); Tonka (1958), a Disney film about a horse who is the only survivor on the Cavalry side; The Great Sioux Massacre (1965); Custer of the West, (1967), starring Robert Shaw. Leslie Nielsen played him on TV, in something called The Plainsman. I don't actually know all this on my own - I just looked it up in Halliwell's Filmgoer's Companion. Stephen Brophy