1936 was the last time which team sport on horseback was in the Olympics?

In which 1936 film does Errol Flynn lead a cavalry unit into Russian cannon fire and everlasting glory? Who won the men's 100 meters at the 1936 Berlin Olympics? Which 1936 novel begins, "Scarlett O'Hara was not beautiful, but men seldom realized it when caught by her charm"? Marty Glickman and Sam Stoller, both Jewish, were pulled from the U.S. relay team at the 1936 Summer Olympics in which… The 1936 film "Modern Times" was the last in which which star played his Little Tramp character? 1936's "The Petrified Forest" reteamed Bette Davis with which co-star of "Of Human Bondage"? Which 1937 novel contains the line "A sudden understanding, a pity mixed with horror, welled up in Bilbo's heart"? Who was British prime minister from 1937 to 1940?