D-Day, on its 60th anniversary, is passing from memory into symbolism. This may not be the last time that veterans gather in large numbers, and to such moving effect, at the Normandy memorials, but as more of these gallant soldiers pass away, a younger generation of politicians can more comfortably wrangle about the imagery of the landings. This is, for example, the first year that the German leader has been invited to the commemoration; but his Italian counterpart has been left out. Silvio Berlusconi is understandably annoyed. So are the Americans, who detect a calculated snub to one of their...