"Extreme Ownership" by Jocko Willink and Leif Babin. I highly recommend the audiobook, it is narrated by the authors and is very engaging.

Some of the comments in this thread say that military orders and life and death situations don't apply in the business world. But that isn't what this book is about, the advice is really the opposite of giving orders the must be followed without question. And the lessons are explained in ways that clearly relate to business management.