"When a Blue Service Star Turns to Gold" is a World War I era song released in 1918.

Featured prominently on the sheet music cover is a service star.

[3][4][5] The title of the song refers to the service flags people would place in their windows during wartime.

A flag with a blue star meant a member of that family or organization was serving in the war.

[6] The chorus is as follows:[5] The sheet music can be found at Pritzker Military Museum & Library.