Conversation so far:
how old was john wayne when he made she wore a yellow ribbon
John Wayne was 41 when the film She Wore a Yellow Ribbon was made.
did John Wayne play the main character of She Wore a Yellow Ribbon
She Wore a Yellow Ribbon is a 1949 Technicolor Western film starring John Wayne.
what was the name of John Wayne's character in She Wore a Yellow Ribbon
Nathan Cutting Brittles

Question: what does the character do
Self-contained rewrite: what does Nathan Cutting Brittles do in She Wore a Yellow Ribbon