It's interesting to see civilians looking to the military for leadership and management ideas. I'm a career Army officer, and when I was a young officer I looked to civilian books and other resources for management advice. Over the years, however, I've come appreciate more what the Army has written on the topic.
Here's the current (2019) version of the Army's doctrine on leadership, if anyone wants to see how it has evolved and what's being taught today: https://armypubs.army.mil/epubs/DR_pubs/DR_a/ARN20039-ADP_6-...
And here's the companion guide for "developing leaders:" https://armypubs.army.mil/epubs/DR_pubs/DR_a/ARN36735-FM_6-2...