What I find very important and hardly ever mentioned is the option to pause the game. I watched a lot of videos and hardly ever see someone using this very useful option.Quite often I saw let's plays with the player failing to notice the reinforcement flags or enemies popping up in the way of cavalry. If you want to take a look around the battlefield or search for some stray units, simply pause the game. Also you can give complex orders to several units while being paused. There is no need to lose men somewhere on the map because you were busy somewhere else.