PRELUDE TO MARKET GARDEN - Bridgehead on the Meuse-Escaut canal. Crossing at Lommel, The Class 40 Bridge. Arnhem-The defenses, The plan, The bridges, Sunday, September 17, Race for the bridges, Main force-attack and defense, The Evacuation, Arnhem VC's. War Film-A Bridge too Far. Preservation-The Hartenstein Museum.