one of the objetivs of this game is being as realistic and emercive as possible , so in a real battle you dont have to move your shield all the way back to do a trust or a cut . many times you are using your spear on the top os your shield or while you are holding it . in other words if you just move your shield a bit to the front left of the character during a sword or an axe the atk you will have less to animat and will be more realistic . or be able to do both things like doing a massive cut whit more demage and moving the shield all the way back and and one with less demage but still holding your shield to protect your self .