ignificant
fortress in Franche Comte completely checked the Imperialists, and they
were obliged, a second time, to abandon their enterprise.

The activity of Duke Bernard had hitherto been impeded by his dependence
on a French general, more suited to the priestly robe, than to the baton
of command; and although, in conjunction with him, he conquered Alsace
Saverne, he found himself unable, in the years 1636 and 1637, to
maintain his position upon the Rhine. The ill success of the French
arms in the Netherlands had cheated the activity of operations in Alsace
and Breisgau; but in 1638, the war in that quarter took a more brilliant
turn. Relieved from his former restraint, and with unlimited command of
his troops, Duke Bernard, in the beginning of February, left his winter
quarters in the bishopric of Basle, and unexpectedly appeared upon the
Rhine, where, at this rude season of the year, an attack was little
anticipated. The forest towns of Laufenburg, Waldshut, and Seckingen,
were surprised, and Rhinefeldt besieged. The Duke of Savelli, the
Imperial general who commanded in that quarter, hastened by forced
marches to the relief of this important place, succeeded in raising the
siege, and compelled the Duke of Weimar, with great loss to retire.
But, contrary to all human expectation, he appeared on the third day
after, (21st February, 1638,) before the Imperialists, in order of
battle, and defeated them in a bloody engagement, in which the four
Imperial generals, Savelli, John De Werth, Enkeford, and Sperreuter,
with 2000 men, were taken prisoners. Two of these, De Werth and
Enkeford, were afterwards sent by Richelieu's orders into France, in
order to flatter the vanity of the French by the sight of such
distinguished prisoners, and by the pomp of military trophies, to
withdraw the attention of the populace from the public distress. The
captured standards and colours were, with the same view, carried in
solemn procession to the church of Notre Dame, thrice exhibited before
the altar, and committed to sacred custody.

The taking of Rhinefeldt, Roeteln, and Fribourg, was the immediate
consequence of the duke's victory. His army now increased by
considerable recruits, and his projects expanded in proportion as
fortune favoured him. The fortress of Breysach upon the Rhine was
looked upon as holding the command of that river, and as the key of
Alsace. No place in this quarter was of more importance to the Emperor,
and upon