CINEGIORNALI DI GUERRA: No. 4, July-August 1940
This is the VHS release (see more).
SummaryContains two sub-related items:
1.) Napoli - Un Sottomarino Ritorna
An Italian sub returns to its base in Naples after a successful cruise against the British.
2.) Sommergibili Germanici
A German sub in the Channel engages an enemy sub and sinks it with his deck cannon.