Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Field Grade blues

As a Lt Col myself I can appreciate the hero's dilemmas. If you screw up, others are going to eat it big. I've enjoyed the series, and am wondering how soon he'll pin on 0-6. The hero does spend a lot of time agonizing over his thought processes. He should be more confident of his abilities, otherwise he shouldn't wear the rank. The one book, one rank option will limit itself. I'm sure there were other missions he could have done as, say, a Captain. You generally do not get promoted after a small campaign. Overall good series, the author does have a good understanding of the military community.