The best tactic is to run away from the battlefield when you are attacked and collect all the units to attack with an advantage. During the opponent's turn, the camera moves for a long time and randomly, which is boring, because most of the soldiers do nothing or sometimes yawn.
During the selection of the army there is a bug, when you click on an already selected fighter, he is imperceptibly cloned. Thus, the player can control an army of clones.