Part of the issue no doubt is that most tactics are a set of principles which provide guidance. They help you determine your plan but are not proscriptive in application. They are the “science” part if you like, you still need to add the “art” to apply them to a specific situation. Many people expect to see “magic bullet“ stuff that they can always apply in exactly the same way (regardless of the ground, enemy, time of day, weather, etc.) and always achieve victory. Short of “attacking” a position with a 15 Mt fission device, this wont happen.