There is a number of movies about wars, and none of them is more impactful and emotional than the 13 Hours series. Here is how the trailer for the movie becomes one of the best and most informative movies on war for a long time.
Since this series is made by documentary film makers, the series is kept focused on the story of men who are dedicated to telling the story of the battle from their point of view. This is also an important consideration in terms of the movie's authenticity. The level of accuracy in a documentary movie is often very high.
Another quality of a documentary movie is that it can be easily understood even by non-experts, even if the director's point of view is not relevant. This is done through using rich CGI backgrounds and characters, as well as impressive transitions between the sequences.
This is what a movie about a war should be. It can be equally an educational experience as it is a depressing one.
The war started with a few simple words from a soldier on a mobile phone. Then everything changed with a few symbols and a video.
The trailer for the movie starts with a simple way of explaining the original events to the audience. The change of hands of the events and even the failure of the main character to create a movie would happen naturally.
From the very beginning, the trailer depicts the fact that the lesson of the story is that not every event happens the same and that the failure is never a failure because the message was not conveyed clearly enough. These lessons would have been learned by the story's heroes, if only they had listened.
A movie about a war cannot be very effective without the audience having a basic understanding of the concept. And even the most technically advanced and polished movies will fail if the audience does not understand the basic principles behind the story. However, a movie based on a book about war is not as bad as a movie based on a documentary movie.