Five songs were dropped from the release print: "Coming in on a Wing and a Prayer" (music by Jimmy McHugh, lyrics by Harold Adamson), sung with a bit of comedy by Martha Raye; the slightly risqué "SNAFU" (music by McHugh, lyrics by Adamson), sung and danced by Martha Raye, Carole Landis and Mitzi Mayfair; "It's the Old Army Game" (music by McHugh, lyrics by Adamson), performed by Kay Francis (reciting rather than singing while supposedly playing the piano), plus Raye, Landis and Mayfair; "Silent Night" (music by Franz Xaver Gruber, lyrics by 'Josef Mohr'); sung by Martha Raye; and "Mamae Yo Quero" (music by Vicente Paiva, Portuguese lyrics by Jararaca), sung and danced by Carmen Miranda. All five songs as filmed still exist.
According to the documentary short The Real Four Jills (2008), Kay Francis and Carole Landis became intimate during the USO tour. Landis presented the affair as simply a close friendship, but Francis's diaries are blunt about their sexual nature.
Guest star Betty Grable's appearance was her last in a black-and-white feature film, not counting her showing up later that year in Take It or Leave It (1944), which recycled "The Sheik of Araby" footage with Betty, Alice Faye and Billy Gilbert originally from Tin Pan Alley (1940).
The title "Four Jills In A Jeep", is a play on a 1942 song by The Andrews Sisters titled "Six Jerks In A Jeep"
Carole Landis wrote a 1942 book about the story in this film, also called "Four Jills in a Jeep".