 Complete the following phrase:  Bibliser Airfield was built by the United States Army Air Forces at the site of a Wehrmacht Army Barracks Biblis Kaserne. It was also the first USAAF airfield to be built in support of Seventh Army operations east of the Rhine River after two divisions crossed the river near Worms on 26 March 1945. It was a vital airfield used in the encirclement of the 