What is the author's style in With the Old Breed, at Peleliu and Okinawa by E. B. Sledge?

The text was originally written as a personal memoir for the author's family only. As the narrative developed, the author's family encouraged him to finish and polish the book and seek publication, which was originally accomplished in 1981. Since that time, additional editions have included various front-matter. The author states that the memoir is personal in nature but that it also develops several themes of larger importance, such as the horror of combat and the futility of warfare as a routine methodology of politics.