Paul Verhoeven - Voorbij, voorbij AKA All Things Pass (1981)

*** contain spoilers ***
During World War II in the Netherlands, resistance leader Arie is shot by Dutch SS man Niels. Arie’s comrades swear they’ll avenge his death.
35 years later one of them, Ab, is confronted with Niels again. He decides to round up his old friends to kill him.
However, they don’t want to do it or they’re not capable of doing it anymore. Only former communist Wout hasn’t forgotten his pledge and takes part in the execution.