You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: PULITZER PRIZES 
Clue: Nicknamed "Black Jack", his memoir "My Experiences in the World War" won the 1932 Pulitzer Prize for History
general pershing

Category: DESIGN 
Clue: Derived from scutum, the Latin for "shield", it's a shield bearing a coat of arms, or a metal plate around a keyhole
escutcheon

Category: THE SHERLOCK HOLMES FILE 
Clue: His archenemy, "the Napoleon of crime"

moriarty