Born at Reveille, by Colonel Red Reeder. Kindle E book $2.99
"Red" Reeder used to be quite famous in the Army. Not only did he write a pile of books about West Point life for the Young Adult Market, but he was a very well known football coach for West Point. Most people today do not know him, but you should as he was the CO of the 12th Inf Regt at Utah Beach. It was just after landing there that he got badly wounded and taken out of the war, which led him to not only coaching football, but speaking on leadership.
This is a quite good autobiography of his life up through WW2. Lots of good pre-war Army stuff. I'm not going to say it is the greatest book ever, but I did find it very interesting and enjoyable. While he does talk some of his theories of leadership, the section on D-day is important, short, but important. Had they landed his Regiment at Omaha instead I think he'd be a major hero to a lot more people.
Anyway, it's a Kindle E book for $2.99. You can’t beat that, and it's money well spent.