Antwerp had at the departure of the Spanish troops been again garrisoned by Germans, who had remained inactive during this exhibition of the popular will. The Prince of Orange himself had paid a visit to the city, and had, at the invitation of Brussels, proceeded there, and had received an enthusiastic reception, and for a time it seemed that the plans for which so many years he had struggled were at last to be crowned with success. But his hopes were frustrated by the treachery of the nobles and the cowardice of the army the patriots had engaged in their service. Many of the Spanish troops had been secretly brought back again, and Don John was preparing for a renewal of war. Unknown to the Prince of Orange, numbers of the nobles had invited the Archduke Mathias, brother of the Emperor Rudolph of Germany, to assume the government. Mathias, without consultation with his brother, accepted the invitation and journeyed privately to the Netherlands. Had the Prince of Orange declared against him he must at once have returned to Vienna, but this would have aroused the anger of the emperor and the whole of Germany. Had the prince upon the other hand abandoned the field and retired into Holland, he would have played into the hands of his adversaries. Accordingly he received Mathias at Antwerp with great state, and the archduke was well satisfied to place himself in the hands of the most powerful man in the country. The prince's position was greatly strengthened by the queen instructing her ministers to inform the envoy of the Netherlands that she would feel compelled to withdraw all succour of the states if the Prince of Orange was deprived of his leadership, as it was upon him alone that she relied for success. The prince was thereupon appointed Ruward of Brabant, a position almost analogous to that of dictator. Ghent, which was second only in importance to Antwerp, rose almost immediately, turned out the Catholic authorities, and declared in favour of the prince. A new act of union was signed at Brussels, and the Estates General passed a resolution declaring Don John to be no longer governor or stadtholder of the Netherlands. The Prince of Orange was appointed lieutenant general for Mathias, and the actual power of the latter was reduced to a nullity, but he was installed at Brussels with the greatest pomp and ceremony. Don John, who had by this time collected an army of 20,000 veterans at Namur, and had been joined by the Prince of Parma, a general of great vigour and ability, now marched against the army of the Estates, of which the command had been given to the nobles of the country in the hope of binding them firmly to the national cause.