Keep the realism or over Exaggerated?

Article “when trouble comes” written by Davidson and Lytle have provided examples to show how modern films create mythical representations of war .As one who knows that most of the War films have over exaggerated the true information of history from many aspects. Ineluctable, Many War films are hard to make impersonally. Obviously, the films are not accurate by engrafting personal views and emotion to a “reality recollections”.
The article is based on Vietnam War. Davidson and Lytle mentioned about some war movies are using historical truth .However, while defining the real evidence found in history, director also changed or added information in order to match their personal “ideally” picture. As the authors’ state: “This piece is a dramatic film, not a scholarly monograph. Like novels or plays, films strive for an artistic standard of “truth” that resides less in the particular of historical record than rendering situations and characters in authentic, human ways. (pg 405)
“The Man I Killed” by O’Brian gives a point of view from a solider to the Vietnam War in his early time. As a witness to the war of Vietnam, O’Brian went through all the events that appeared to his sight at that time. Back to his memories, he clearly listed certain incidents he had faced in the past. At this aspect, he is a historian for fact. However, O’Brian has failed to carry the title “historian” according to Davidson and Lytle‘s perspective for what a true historian should be. The principle for a real historian is: 1. always stick with the truth. 2. Judgy a historical event in an impersonal way. O’Brian has made his 1st mistake to against the tenet, “Daddy, tell me the truth,”Kathleen can say, did you ever kill anybody?” and I can say, honestly,”of course not.” Or I can say, honeslty,”yes.”(pg 204) A historian can’t cover the truth with personal feeling which includes: guilty, shameless, embarrassment. They always have to be impartial to recount what was exactly happened during the past.
If the authors Davidson and Lytle would make a critical to the story “The Man I Killed” by O’Brian, they probably would consider it as a mythical representation not Authentic.