 The maneuver called for a pinning force that would occupy a broad front of the enemy line while other supporting units positioned themselves at a specific location in the enemy's flank or rear.As the enemy became more embroiled with the pinning force, the flanking troops would attack at a critical spot and seal the victory.In the Ulm campaign, Murat's cavalry served as the pinning force that fooled the Austrians into thinking the main French attack would come from the Black Forest.