Originally written during World War II as "The WAAC is in Back of You" by White before her induction into the service, the song's lyrics were adapted later by White and Frank to better reflect post-war women's army service, and was adopted by the Women's Army Corps[b] as its official song in 1951.
According to Douglass, the clicking of the car's tires against the road surface made a rhythmic martial marching sound, like a song.
Inspired by her induction into the new Women's Army Auxiliary Corps that day, when Douglass got home that evening, she wrote the song.
[4][5][6][7] As a newly promoted WAAC second officer in the army's Special Services branch, [8] Douglass was sent to New York City to discuss Tin Pan Alley's musical contributions to inspire WAC morale.
[2][3] When creating the 1954 film Francis Joins the WACS, the official song was chosen to play under the opening credits, a women's chorus singing the revised lyrics.