The Atlantic Wall was a defensive system erected by Germany from 1942 onward, consisting of bunkers, gun emplacements, and obstacles along the West European coast. In the Normandy sector, these installations were intended to prevent an Allied invasion. Following the successful landing of June 6, 1944, and the Allied advance, the positions were captured and documented. Jack Lieb recorded such fortifications on his Kodachrome color film—rare color testimony to what is otherwise preserved almost exclusively in black and white from this phase of the Western campaign.