An excellent read, not only about a great soldier, but about what it takes to be a successful sniper: iron-hard patience under difficult conditions; an ability to 'sense the moment', to remain hidden, mental toughness, skilled shooting to ensure 'the kill', personal discipline.
If Sergeant Harrison wrote this on his own, he is not only a better than good soldier, he is a good author as well. Any aspiring snipers must read this first.