JACK HAD KEPT A SHREWD eye on the weather all spring and summer. It had been perfect. He was living in unaccustomed comfort in Strasbourg. This was a city on the Rhine, formerly German and, as of quite recently, French. It lay just to the south of a country called the Palatinate, which, as far as Jack could make out, was a moth-eaten rag of land straddling the Rhine. King Looie's soldiers would overrun the Palatinate from the West, or the Emperor's armies would rape and pillage it from the East, whenever they couldn't think of anything else to do. The person in charge of the Palatinate was called an Elector, which in this part of the world meant a very noble fellow, more than a Duke but less than a King. Until quite recently the Electors Palatinate had been of a very fine and noble family, consisting of too many siblings to keep track of, most quite magnificent; but since only one (the oldest) could be Elector, all of the rest of them had gone out of that country, and found better things to do, or gotten themselves killed in more or less fascinating ways. Eventually the Elector had died and turned matters over to his son: an impotent madman named Charles, who liked to stage mock battles around an old Rhine-castle that wasn't good for much else. The fighting was imaginary, but the trenches, siege-works, dysentery, and gangrene were real.