member of the Union, George Frederick, Margrave of Baden, had for some
time been engaged in assembling a military force, which soon amounted to
a considerable army. Its destination was kept a secret till he suddenly
took the field and joined Mansfeld. Before commencing the war, he
resigned his Margraviate to his son, in the hope of eluding, by this
precaution, the Emperor's revenge, if his enterprize should be
unsuccessful. His neighbour, the Duke of Wirtemberg, likewise began to
augment his military force. The courage of the Palatine revived, and he
laboured assiduously to renew the Protestant Union. It was now time for
Tilly to consult for his own safety, and he hastily summoned the Spanish
troops, under Corduba, to his assistance. But while the enemy was
uniting his strength, Mansfeld and the Margrave separated, and the
latter was defeated by the Bavarian general near Wimpfen (1622).

To defend a king whom his nearest relation persecuted, and who was
deserted even by his own father-in-law, there had come forward an
adventurer without money, and whose very legitimacy was questioned. A
sovereign had resigned possessions over which he reigned in peace, to
hazard the uncertain fortune of war in behalf of a stranger. And now
another soldier of fortune, poor in territorial possessions, but rich in
illustrious ancestry, undertook the defence of a cause which the former
despaired of. Christian, Duke of Brunswick, administrator of
Halberstadt, seemed to have learnt from Count Mansfeld the secret of
keeping in the field an army of 20,000 men without money. Impelled by
youthful presumption, and influenced partly by the wish of establishing
his reputation at the expense of the Roman Catholic priesthood, whom he
cordially detested, and partly by a thirst for plunder, he assembled a
considerable army in Lower Saxony, under the pretext of espousing the
defence of Frederick, and of the liberties of Germany. "God's Friend,
Priest's Foe", was the motto he chose for his coinage, which was struck