The Song of Roland
The Frankish emperor Charlemagne is withdrawing from Spain when his treacherous vassal Ganelon arranges with the Saracen king Marsile to ambush the rearguard at Roncevaux. Roland, commanding that rearguard, refuses to sound his horn for help until it is too late, and he and his companions are slaughtered to the last man. Charlemagne returns, destroys the Saracen and their allied admiral Baligant, and brings Ganelon to trial, where he is condemned and torn apart by horses.