<Li> Eteocles and Polynices kill each other in ensuing battle over the throne of Thebes, Greece in Sophocles' Antigone (Sophocles). </Li> <Li> When both change into different armor, Sir Balin and Sir Balan kill each other in a duel, with Balin shortly outliving his brother and realizing what had happened, according to Arthurian Legend . </Li> <Li> The Biblical story of Cain and Abel . </Li> <Li> The Biblical story of 2 Samuel 13, where Absalom kills Amnon after King David, their father, fails to punish Amnon for raping Tamar, their sister . </Li>

Brother killing brother for the profit of another