Sharks and Little Fish
Haie und kleine Fische (original)
Four young German naval cadets begin their military service in 1940; only one of them will survive.
Starring Hansjörg Felmy, Sabine Bethmann, Wolfgang Preiss, Horst Frank, Heinz Engelmann, Siegfried Lowitz, Dirk Dautzenberg, Karl Lieffen, Mady Rahl, Friedrich Schütter
It's a drama and war movie, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from India.