Saint-Georges's later life was deeply affected by the revolution. Since he was of mixed race, Saint-Georges was affected by the racism and racist laws in pre-Revolutionary France. On August 26, 1789, when the revolution declared equal rights to all French people, Saint-Georges embraced the new law and decided to provide services to the Revolutionary Army. In June 1791, the Parliament recruited volunteers from the entire French National Guard. Saint-Georges was the first person to sign in Lille. He still participated in music events when he was free.