The title character chooses to call himself "Mulberry Field" on a whim.  
The title character chooses to call himself "Mulberry Field" on a whim.  In the movie's final scene, he cuts the ropes off an old man who had been hanging in the town square.  Previously, he had given a dying man back his pistol, which nearly cost him his life.  He first knows that there will be problems when he sees a dog running through the street holding a severed human hand in its mouth.  Later, a man who had assassinated an officer is used as a pawn to play Ushitora and Seibei against each other, but the title character takes a sound beating before finally managing to clean up a corrupt village.  FTP, name this 1961 film that stars Toshiro Mifume as the titular masterless samurai, an Akira Kurosawa work which was remade as A Fistful of Dollars.
The title character chooses to call himself "Mulberry Field" on a whim.  
Yojimbo (or: The Bodyguard)