Conversation so far:
What was Vaudeville?
Vaudeville is a theatrical genre of variety entertainment born in France at the end of the 19th century.
What was Bill Robinson's role in Vaudeville?
By 1912, Bill Robinson was a full partner in the duo, which had become primarily a tap dancing act, booked on both the Keith and Orpheum Circuits.
Did Vaudeville see any success?
Bill Robinson matured and began working as a solo act, increasing his earnings to an estimated $3,500 per week.
How long did Bill Robinson perform solo?
What was Bill Robinson's act about?
Are there any other interesting aspects about Bill Robinson?
Bill Robinson was one of the first performers to break vaudeville's two-colored rule, which forbade solo black acts.. 943–944

Question: Where did he perform for the troops?
Self-contained rewrite: Where did Bill Robinson perform for the troops?