Here, click in the DT is a set of words for She Wore a Yellow Ribbon. Notes there say it's an update of an 1800's song. John Wayne made a movie, "She Wore A Yellow Ribbon". In Heraldry, yellow is actually "Or"--gold, and yes, it is the color of faithfullness.

Given the dates, I would guess that the Tony Orlando song is about a vet returning from the VietNam war.......