 By the close of D-Day allied forces had secured the five invasion beaches but not achieved their objectives of taking Caen and Bayuex. Since the forces on the various beachheads had not linked up the beaches would have been extremely vulnerable had the Germans been able to mount a rapid counterattack by Panzers and strong infantry formations as they had at Salerno. Major Battles to the Breakout at Avranches Securing the Beachheads P-00 