"Sunpu Den" is a film from director Seijun Suzuki is both anti-war and anti-prostitution, as it paints a bleak story of a young woman, Harumi. The story begins with Harumi being dumped by her boyfriend. In reaction, she volunteers to be a 'comfort woman' on the Japanese front lines in China. The comfort women were prostitutes provided by the government for the troops--and this small group of women are to satisfy the sexual needs of a thousand men! To make things worse, the Adjutant in charge is a brutal jerk who mistreats the women. Harumi hates him, though she later falls in love with this man's assistant. What happens next is a tragic waste of life and is an indictment of the Japanese war machine.
This is what you might call a 'feel-bad movie'. It is meant to be sad and awful and it is. The film is compelling viewing but isn't nearly as good as other Japanese anti-war films like "Burmese Harp" or "Fires on the Plain". Very good but not great.