There is no sex nor nudity in this movie.

There is battle field violence in this movie. The movie shows soldiers being killed and wounded during battles.

There is no profanity in this movie.

There are a couple of scenes showing soldiers smoking and drinking - but the main character mocks those who are doing so.

Parts of the movie can be considered intense. Several young soldiers mentioned in the letters die during the Civil War, and that can produce an emotional response in the audience. The struggles of several of the characters in the movie, both women and men, can be considered intense.