There are a few good options in here under the advanced armor training options (bab replacing ranks in one of 9 skills. Crafting magic armor with bab as craft for master craftsmen, even more AC) and one or two useful feats.
The majority of the book is awful, containing terrible options you won't use even if they were free and definitely not when they are locked behind feat taxes. The saving grace of many of the options is that the thing they replace (your +1 max dex and -1 check penalty with each armor training) is 100% useless to a great number of fighters. Something that might be useful someday, even if it's not very good, is better than something completely useless.
This is a personal annoyance, but it actually made me a bit angry. This book contains, of all the stupid, idiotic things to waste space on, an anti-paladin archetype. It's a complete waste of time and space to archetype an archetype that no one ever plays because this is typically a game about heroes. The author made a terrible decision including that. 32 pages and they chose to waste some on this. They could have saved $0.05 by leaving those pages blank and nothing of value would have been lost.
The best options in this book edge fighter's defensive capabilities up a decent amount and give sword and board fighters a set of style feats which are, while not outstanding, something to shake up a build. These options are enough to edge this book into the "probably worth it" 3 star area. If you don't have the Weapon Master's Handbook or the familiar folio, get those first as they give fighters and martials far more and varied options.
