LONDON -- You might think London a curious locale from which to celebrate July 4th, or Independence Day as we say. But the city abounds with British citizens who admire our country. I spent the evening of July 4th in the vast and glorious edifice that is the English-Speaking Union, observing the 90th anniversary of one of the bloodiest battles of all time and certainly of World War I, the Battle of the Somme. "July 4th," one of the assembled Brits remarked, "it is the 230th anniversary of one of your happiest moments. Tonight we are observing one of our...