Wearied of this fruitless pacing up and down, Spinola, while apparently intending an assault upon Deventer, and thus attracting his adversary’s attention to that important city, suddenly swerved to the right, and came down upon Lochem.  The little town, with its very slender garrison, surrendered at once.  It was not a great conquest, but it might possibly be of use in the campaign.  It was taken before the stadholder could move a step to its assistance, even had he deemed it prudent to leave Yssel-side for an hour.  The summer was passing away, the rain was still descending, and it was the 1st of August before Spinola left Lochem.  He then made a rapid movement to the north, between Zwoll and Hasselt, endeavouring to cross the Blackwater, and seize Geelmuyden, on the Zuyder Zee.  Had he succeeded, he might have turned Maurice’s position.  But the works in that direction had been entrusted to an experienced campaigner, Warmelo, sheriff of Zalant, who received the impetuous Spinola and his lieutenant, Count Solre, so warmly, that they reeled backwards at last, after repeated assaults and great loss of men, and never more attempted to cross the Yssel.

Obviously, the campaign had failed.  Utrecht and Holland were as far out of the Catholic general’s reach as the stars in the sky, but at least, with his large armies, he could earn a few trophies, barren or productive, as it might prove, before winter, uniting with the deluge, should drive him from the field.

On the 3rd August, he laid siege to Groll (or Groenlo), a fortified town of secondary importance in the country of Zutphen, and, squandering his men with much recklessness, in his determination not to be baffled, reduced the place in eleven days.  Here he paused for a breathing spell, and then, renouncing all his schemes upon the inner defences of the republic, withdrew once more to the Rhine and laid siege to Rheinberg.

This frontier place had been tossed to and fro so often between the contending parties in the perpetual warfare, that its inhabitants must have learned to consider themselves rather as a convenient circulating medium for military operations than as burghers who had any part in the ordinary business of life.  It had old-fashioned defences of stones which, during the recent occupation by the States, had been much improved, and had been strengthened with earthworks.

Before it was besieged, Maurice sent his brother Frederic Henry, with some picked companies, into the place, so that the garrison amounted to three thousand effective men.

The Prince de Soubise, brother of the Duc de Rohan, and other French volunteers of quality, also threw themselves into the place, in order to take lessons in the latest methods of attack and defence.  It was now admitted that no more accomplished pupil of the stadholder in the beleaguering art had appeared in Europe than his present formidable adversary.  On this occasion, however, there was no great display of science.  Maurice obstinately refused to move to the relief of the place, despite all the efforts of a deputation of the States-General who visited his camp in September, urging him strenuously to take the chances of a stricken field.