It has been seen that the part played by France in the memorable campaign
of 1610 was that of admiring auxiliary to the States' forces; Marshal de
la Chatre having in all things admitted the superiority of their army and
the magnificent generalship of Prince Maurice. But the government of the
Dowager had been committed by that enterprise to carry out the life-long
policy of Henry, and to maintain his firm alliance with the Republic.
Whether any of the great king's acuteness and vigour in countermining and
shattering the plans of the House of Austria was left in the French
court, time was to show. Meantime Barneveld was crying himself hoarse
with warnings into the dull ears of England and France.

A few weeks later the Prince of Neuburg had thrown off the mask. Twelve
thousand foot and 1500 horse had been raised in great haste, so the
Advocate informed the French court, by Spain and the Archdukes, for the
use of that pretender. Five or six thousand Spaniards were coming by sea
to Flanders, and as many Italians were crossing the mountains, besides a
great number mustering for the same purpose in Germany and Lorraine.
Barneveld was constantly receiving most important intelligence of
military plans and movements from Prague, which he placed daily before
the eyes of governments wilfully blind.

"I ponder well at this crisis," he said to his friend Caron, "the
intelligence I received some months back from Ratisbon, out of the
cabinet of the Jesuits, that the design of the Catholic or Roman League
is to bring this year a great army into the field, in order to make
Neuburg, who was even then said to be of the Roman profession and League,
master of Julich and the duchies; to execute the Imperial decree against
Aachen and Mulheim, preventing any aid from being sent into Germany by
these Provinces, or by Great Britain, and placing the Archduke and