Total War: Warhammer 3 is a strategy resolved on two different layers.
The first is a turn-based grand strategy putting you in control of a single faction: its cities, armies, research, and political involvements. It plays out on a gorgeous map of the part of the world featured in TW:WH3 which gives a convenient overview of borders, movement of armies, and more.
The other layer are the real-time (with pause) battles between the armies, featuring complex tactics, terrain simulation, as well as detailed unit traits and behavior. These battles can be quite a spectacle, too, due to the sheer number of units, giant creatures, and displays of powerful magic.