DUNKIRK Images Tease Christopher Nolan’s World War II Epic July 10, 2017 When 400,000 men couldn’t get home… home came for them. New stills from the July 21st release take us inside the action. DUNKIRK opens as hundreds of thousands of British and Allied troops are surrounded by enemy forces. Trapped on the beach with their backs to the sea they face an impossible situation as the enemy closes in. DUNKIRK – Irish release date is cinemas July 21, 2017.