Claim: Marie Dubas' song, "Mon légionnaire", was written by Raymond Asso, who was a French lyricist, and Marie recorded it in 1936, and in 1939 she toured the United States.
Evidence: Her most famous song, Mon légionnaire, was written by Raymond Asso and recorded in 1936. Her popularity became such that in 1939 she toured the United States. Raymond Asso (2 June 1901 – 24 October 1968) was a French lyricist. 
(1901-06-02)2 June 1901
Nice, France Lyricist Her most famous song, Mon légionnaire, was written by Raymond Asso and recorded in 1936. Her popularity became such that in 1939 she toured the United States.