Trois artilleurs au pensionnat

Trois artilleurs au pensionnat (1937) is a comedy directed by René Pujol rated 6.5/10.

Three happy reservists are doing a military period. One evening out and about, thinking they were going back to the barracks, they enter a boarding school for young girls. They exchange their uniforms for the dresses of three teachers, which launches them into a series of incredible adventures for a few days.