For Whom the Bell Tolls has an interesting story which the synopsis here does not do justice. Gary Cooper and the guerilla band he's allied with realize that the chances of successfully bombing the bridge without sacrificing their own lives are diminishing with every setback, and Cooper has to deal with the tension between following his duty to the Spanish Republic and his romance with Maria.
Unfortunately, the film can't live up to this story. While Cooper's character has found a new purpose and source of joy in his relationship with Maria, Cooper plays him like Captain America, and there is no question he will follow his orders, even if it means his death. The one scene that had the most emotional impact for me (where some trapped guerillas lure an arrogant Nationalist officer out so they can kill him) did not involve Cooper or Bergman at all.
The dialogue is corny--I especially winced at Ingrid Bergman's lines, where she talks about how much she loves Robert Jordan and how much she can't wait to take care of him, etc. etc. I really hope this came from the screenwriter and not Hemingway.
In short, even though the Spanish Republic and the lives of Cooper's and Bergman's characters are in extreme danger, the acting and dialogue prevented me from really caring.
The score by Victor Young was also fairly repetitive and obtrusive. It felt as if the filmmakers were desperately pleading with the audience to feel sad for the Republican guerrillas.
In other regards the film is competently done, for its time period. The production values are excellent, so for the most part I could buy that Jordan was in mountainous Spain. None of the people playing the Spanish guerillas were actually Spanish, but that didn't bother me.