80 years ago, millions of American soldiers started arriving in Britain, a friendly invasion that was here to prepare for the liberation of Europe. Amongst them was Easy Company of the 506th Parachute Infantry Regiment - that would become the famous Band of Brothers. Now, a team of volunteers, including archaeologists and military veterans, is digging under the beautiful village of Aldbourne in Wiltshire, where Easy company did their training. Dan Snow joins in the dig - searching for traces of these extraordinary individuals.