Can something be situated into a time?

I think it's not quite right.

Maybe try, "The film is set in the <insert which war> period of Czech history."

yes, situated probably refers to place, not time

so maybe I could also use "take place"

That might work. I think set is the closest, though, since it is used to describe the background in movies and stage shows. 'On the set...' and so on. There might be a better word. I'll have to think about that.

Thank you FreeDuck.

No problem, ryunin, and welcome to A2K.