Overlord: D-Day and the Battle for Normandy is a fabulous book of his, I read it whilst I was in Normandy staying at a chateau B&B which had been an SS HQ in the war....unbelieable feeling being there, talk about atmospheric !... also it was only a few miles from the location of the Falaise Pocket. The museum there is so atmospheric, they are still finding bodies of German troops to this day!