Depends on the rank. Generals need to formulate strategy and out-think the enemy's generals.
Read "The Art of War" by Sun Tzu. The principles of warfare haven't changed in thousands of years, and most civilians don't understand them.
Trump does. His negotiating philosophy, The Art of the Deal, is an application of Sun Tzu's martial philosophy to dealmaking.
Rule 1: The foundation of war is deception.