What is the importance of letters and military reports in the novel, Youngblood?

Though most of the novel is told from Lt. Jack’s point of view, there are several instances in which the reader is given a letter or military report. These serve as an abrupt shift in narration, and therefore draw attention to the content within them. They are all documents to which Jack has access, such as the military investigative reports at the end of Book 2 or the email from his brother, and therefore do not give the reader any information to which Jack is not privy. This narrative form deepens the readers tie to Jack, as both Jack and the reader gain new information at the same time. The reader is left then to compare their own reactions to the materials to Jack’s reactions, which are revealed once the normal form of narration is resumed.