"Mon légionnaire" is a French song introduced in 1936 by vocalist Marie Dubas, with lyrics by Raymond Asso and music by Marguerite Monnot.
The romantic theme of a woman's longing for an embittered Legionnaire who refuses to reveal his name, with whom she has a brief affair, fits well with Piaf's image.
"Mon légionnaire" was recorded by Serge Gainsbourg in 1987; the male voice singing the lyrics made famous by Piaf gave the song a strong homoerotic undertone.
This new version of "Mon légionnaire" was a hit on French dance floors, both gay and heterosexual.
A version with the lyrics translated into English appears on the 1981 album Spirit of St. Louis by Ellen Foley.