What was the principle objective of the landings at Normandy, beyond establishing the beachhead itself?

The principle objective of the landings at Normandy, beyond establishing the beachhead itself, was to capture Cherbourg so supplies could be handled quickly. Capturing Cherbourg was crucial for the Allies because it was one of the best deep-water ports in the area. By taking control of this port, the Allies could facilitate the rapid offloading of troops, equipment, and supplies, which were essential for sustaining the momentum of their campaign in Europe.

Cherbourg was strategically located and its capture meant that the Allies could ensure a continuous flow of reinforcements and logistics into the region, which was vital for the success of the entire Normandy operation and the subsequent advance into occupied France. Without a secure supply line, the forces landing on the beaches would struggle to maintain their operations against German defenses.