"Preparations For "operation Varsity", the Crossing of the Rhine, at Walbeck, Germany, 22 March 1945" The Commander of the 21st Army Group, Field Marshal Sir Bernard Montgomery (left), the Commander of the 2nd Tactical Air Force, Air Marshal Sir Arthur Coningham (centre) and the Commander of the British 2nd Army, Lieutenant General Sir Miles Dempsey, talking after a conference held in a small German village attended by all Senior Officers of the 21st Army Group and 2nd Tactical Air Force. At the conference Field Marshal Montgomery gave the order for the 2nd Army to begin the assault crossing of the Rhine.