Carmen and the Reds
Frente de Madrid (original)
Javier Navarro, a Falangist, is ordered to infiltrate Republican Madrid to deliver a message to a member of the Fifth Column.
Starring Rafael Rivelles, Fosco Giachetti, Conchita Montes, Juan de Landa, Manolo Morán, Blanca de Silos, Luis López Estrada, Argimiro Guerra, Manuel Miranda, Ángel Marrero
It's a drama and war movie, and has a rating of 6.4 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Ireland.