Gustav, at his first landing, had seized Pommern, and swept it clear of Austrians, for himself and for his own wants; not too regardful of George Wilhelm's claims on it. He cleared out Frankfurt-on-Oder, Custrin and other Brandenburg Towns, in a similar manner,--by cannon and storm, when needful;--drove the Imperialists and Tilly forth of these countries. Advancing, next year, to save Magdeburg, now shrieking under Tilly's bombardment, Gustav insisted on having, if not some bond of union from his Brother-in-law of Brandenburg, at least the temporary cession of two Places of War for himself, Spandau and Custrin, indispensable in any farther operation. Which cession Kurfurst George Wilhelm, though giving all his prayers to the Good Cause, could by no means grant. Gustav had to insist, with more and more emphasis; advancing at last, with military menace, upon Berlin itself. He was met by George Wilhelm and his Council, "in the woods of Copenick," short way to the east of that City: there George Wilhelm and his Council wandered about, sending messages, hopelessly consulting; saying among each other, _"Que faire; ils ont des canons,_ what can one do; they have got cannon?" [_OEvres de Frederic le Grand_ (Berlin, 1846-1856 et seqq.: _Memoires de Brandebourg_), i. 38. For the rest, Friedrich's Account of the Transaction is very loose and scanty: see Pauli (iv. 568) and his minute details.] For many hours so; round the inflexible Gustav,--who was there like a fixed milestone, and to all questions and comers had only one answer!--_"Que faire; ils ont des canons?"_ This was the 3d May, 1631. This probably is about the nadir-point of the Brandenburg-Hohenzollern History. The little Friedrich, who became Frederick the Great, in writing of it, has a certain grim banter in his tone; and looks rather with mockery on the perplexities of his poor Ancestor, so fatally ignorant of the time of day it had now become.