Hearts of Iron 4 UK Challenge - From D-Day to VE-Day

With the advance in Italy completely stalled and the war in the Middle East that turned into trench warfare with both sides just sitting idle and waiting for the other to make a move, the landings in Northern France became the last hope to unlock the situation on the European Continent. But as the order to proceed was about to be given, someone in the Imperial High Command realized that it would have been a wiser choice to develop the floating harbours technology first...