For full disclosure, I am not involved in the armed forces, but rather a general civilian. I purchased this book based on positive reviews I have received stating that this book was backed by concrete scientific research and studies, a feature many "mindset books" lack.
This book does not disappoint in that area. Warrior Mindset contains numerous practical exercises for developing a stronger mind and backs each exercise with research for doing so. The book is clearly laid out and easy to follow. Warrior Mindset is directed at the armed forces, so naturally numerous examples are from armed forces or police scenarios. There are also numerous sports examples and occasionally other professions. Despite this, I was pleasantly surprised of the take-aways from each chapter as they are very much relevant to whatever field you are in, specially the practical exercises.
The only downside to this book is it is dry. The research is of huge benefit, but sometimes I craved for a more personal sounding voice to the authors. It reads like a manual. This could be a positive or negative depending on your taste.
Overall, if you have come from a world of lightly backed research books on mindset that make you feel good, but provide little practicality; this book will be refreshing. It is raw, honest, and to the point. But realize this book IS directed towards the armed forces.