On the evening of December 12, 1944, a host of German generals, the senior field commanders on the Western front, were called to Rundstedt’s headquarters, stripped of their side arms and briefcases, packed into a bus, driven about the dark, snowy countryside for half an hour to make them lose their bearings, and finally deposited at the entrance to a deep underground bunker which turned out to be Hitler’s headquarters at Ziegenberg near Frankfurt.