a couple have sex, but no nudity is shown and it is not graphic at all

One kiss scene and a brief sex scene.

An underground club of German gay men celebrates. No nudity; just some cross-dressing.

A soldier is put on fire.

There is a description of physical torture, with the tools being shown. But the act is not portrayed, just implied that it happened.

A man is struck with a broken table leg and a little later, gets the lot of it. Only the perpetrator in action is shown.

Brief smoking

Groups of people are mercilessly executed by shooting.

A lot of intense scenes of hiding, escaping, and also of being caught.