Which concepts do you think is the most effective strategy in Sunzi’s Art of War?

"Planning before going to warBefore entering a war, one must compare and analyze all factors of both sides. These mainly include: morale, climate, terrain, commanders, and rules."Morale" refers to the approval or disapproval of the people. The army that has the approval of the people will gain their support, while one without endorsement will lose their support. "Climate" refers to seasonal conditions at the time of war. "Terrain" refers to the distance (far or near), position (ease or difficulty of access), size (large or small), and height (high or low) of the topography for war. Consideration must also be given to the degree of security or danger in the area. "Rules" refer to regulations governing the army, "Whoshould carry out orders? What are the respective strengths of the soldiers? Who is responsible for training the troops? Who decides rewards or punishments?