One of the most useful information in the game(Binding groups)

Often during the game you have to build many different types of buildings (for example: barracks in Europe or shooting ranges in Asia) and in the heat of battle a lot of time is spent searching for these buildings and selecting them all and then ordering units.
To simplify these procedures, use group assignments:
*Select all the objects you want to add to the group -- press Ctrl+ 1/2/3/4...(any number) -- now when you click on the selected number, for example 1, all objects added to the group will be selected, and when you double-click this key, your camera will be redirected to the objects of the group.
This function is very convenient to use in battle. For example:
*You have an army of pikemen, archers and catapults.
You can bind pikemen to 1 (using Ctrl+1), archers to 2 (Ctrl+2), catapults to 3 (Ctrl+3). Now, during a battle, by pressing 1 you can easily control the actions of the pikemen by sending them to the front line. By pressing 2 - select priority targets for archers. By pressing 3, you can make targeted strikes with catapults on buildings or concentrations of troops.
And these are just a couple of examples of using this function. You can come up with your own strategies and use them.
I hope it was useful!:)

War Selection features

[Loutre]

very cool