The main themes would include the application of ancient military wisdom in modern contexts. Given its connection to 'The Art of War', it will show how the principles from that classic work can be relevant today. Additionally, themes of honor and duty are likely present. Jake Grafton is probably bound by a sense of honor and duty in his military actions, and these concepts will be explored throughout the novel. There may also be a theme of survival, both in physical combat situations and in the political and military power games that are part of the story.
There are several key themes. Military strategy is a major one, as the novel will surely explore different strategies inspired by 'The Art of War'. The character of Jake Grafton will be at the center of this, making decisions based on strategic thinking. Another important theme is the human element in war. It will look at how soldiers, like Jake Grafton, deal with the psychological and emotional aspects of war. This includes things like fear, courage, and camaraderie. Also, the theme of adaptation is likely there. As the military situations change, Jake Grafton and his comrades will have to adapt, just as the teachings of 'The Art of War' suggest flexibility in strategy.