sentences:  The enemy defending the city, on the other hand, had fewer artilleries and thus was forced to move around whenever and wherever they were needed, and such frequent and rapid movement to the next new position where artillery support was needed helped the enemy artilleries from being shelled by the nationalist counter-artillery fire.In contrast, nationalist artillery was the first to fire for most of the time, but after firing, they were not able to move around due to limited positions available and the high concentration of batteries deployed in the few available positions.As a result, the nationalist batteries became victims of enemy counter-artillery fire and suffered great loss.