I ~~love~~ hate how in movies and tv shows about old times warfare there are all of these maps everywhere and in depth discussions of how they're going to beat the enemy, discussion of battle tactics, etc. and the only real tactics we see in execution are when which side decides to charge in an undisciplined mass

Also the spinning. It was truly a sad day in history when weaponry and martial arts split from dancing. While ballerinas did master the art of spinning, its loss in warfare can still be seen to this day.

Edit: I should mention that spinning is a good trick.