Jocko Willink's 'Leadership Strategy and Tactics: Field Manual' (2020) is a helpful follow-up to his other co-authored works - 'Extreme Ownership: How U.S. Navy SEALs Lead and Win' (2015), and 'The Dichotomy of Leadership: Balancing the Challenges of Extreme Ownership to Lead and Win' (2018). In it, he drives home and further explains concepts which bear repeating and emphasis.
For instance, consider the phrase "discipline equals freedom." Why would that be true, and what can we do about it?
Or for another example, how important is keeping our own selfish pride in check to being able to work together and collaborate with others on projects and in teams?
The short answer is that whether we lead or are striving to understand better those who lead us, these are worthwhile books to add to the library in pursuit of greater faithfulness and effectiveness.