Europe is preparing to mark 80 years since D-Day with a week of commemorations and ceremonies. On Tuesday, two French Navy landing craft arrived at Omaha Beach for an assault rehearsal involving dozens of volunteers. They were joined by US Army vintage Harley Davidson motorbikes in a large parade across the Normandy landing beaches. On the other side of the Channel, the sea and skies around the English city of Portsmouth were buzzing with ships and planes as British veterans left the coast of the UK, heading to France. The veterans will take part in parades, school visits and other ceremonies …