Which film did Goldie Hawn join the army?

Goldie Hawn did not join the army in any film. She has never starred in a movie where her character joins the military.

She is known for starring in comedies such as "Private Benjamin" (1980) and "Overboard" (1987). While "Private Benjamin" involves the army, Goldie Hawn plays a woman who joins the army after her husband dies, not a woman who enlists on her own volition.