Tactics
The batteries opened fire when enemy lines reached 200 meters and continued until the range from the enemies relative to the regiment was 150 meters. At that point, artillery pieces were moved forward 25 meters to a new position and so on. Since the advancement speed of the artillery was 1/2 times of the regiment, the distance between them were exponentially increased making the firing angle to shrink accordingly. At the time artillery had advanced 50 meters, own battalions had advanced an additional distance of 100 meters and ready for their first musketeer salvo now with the artillery positioned 100 meters back.
Read more about this topic: Swedish Field Artillery (early 18th Century)