Early in the spring, the war was seriously taken in hand by Farnese. It
has already been seen that the republic had been almost entirely driven
out of Flanders and Brabant. The Estates, however, still held Grave,
Megem, Batenburg, and Venlo upon the Meuse. That river formed, as it
were, a perfect circle of protection for the whole Province of Brabant,
and Farnese determined to make himself master of this great natural moat.
Afterwards, he meant to possess himself of the Rhine, flowing in a
parallel course, about twenty-five miles further to the east. In order
to gain and hold the Meuse, the first step was to reduce the city of
Grave. That town, upon the left or Brabant bank, was strongly fortified
on its land-side, where it was surrounded by low and fertile pastures,
while, upon the other, it depended upon its natural Toss, the river. It
was, according to Lord North and the Earl of Leicester, the "strongest
town in all the Low Countries, though but a little one."

Baron Hemart, a young Gueldrian noble, of small experience in military
affairs, commanded in the city, his garrison being eight hundred
soldiers, and about one thousand burgher guard. As early as January,
Farnese had ordered Count Mansfeld to lay siege to the place. Five forts
had accordingly been constructed, above and below the town, upon the left
bank of the river, while a bridge of boats thrown across the stream led
to a fortified camp on the opposite side. Mansfeld, Mondragon, Bobadil,
Aquila, and other distinguished veterans in Philip's service, were
engaged in the enterprise. A few unimportant skirmishes between Schenk
and the Spaniards had taken place, but the city was already hard pressed,
and, by the series of forts which environed it, was cut off from its
supplies. It was highly important, therefore, that Grave should be
relieved, with the least possible delay.