 First the Pathfinder Force (PFF) dropped offset markers at a distance from the target for the main bombing force to use unobscured by smoke.The second stage was to use 'time-and-distance bombing runs' from a location on the Lake Constance shore along a measured distance to the target.The attack hit the V-2 rocket facility of the Zeppelin Works, which made Operation Bellicose the first mission of Operation Crossbow the campaign against German V weapons.