Charles of Burgau pursued a military career. He unsuccessfully led a Spanish regiment in the war against the Netherlands and was then deployed in the
Long War against the
Ottoman Empire. Here, he recorded some successes — at the expense of his soldiers, who were hungry and unpaid; some of them deserted — and was promoted to
Field Marshal. His father died in 1595. Since Charles was born from a
morganatic marriage, he was not entitled to inherit the archduchy. He was, however, amply compensated financially and given some territories. His most important possession was the
Margraviate of Burgau. He also held the
Landgraviate of Nellenburg and the
County of Hohenberg. Contemporary sources describe his magnificent court at his residence,
Günzburg Castle. Charles was not popular among his subjects, whom he forbade to drink
wheat beer. Nor was he popular among the noble residents of his
margraviate, who included the
Bishop of Augsburg, the Counts of
Fugger and the
free imperial cities of
Ulm and
Augsburg, and with whom he had conflict about tax increases and about their sovereign rights. In 1615 or 1616, he founded a Capuchin monastery in Günzburg. In 1617, he expelled the Jews from Günzburg; they were ordered to leave the city within a year. Charles died on 30 October 1618. In 1619, his body was transferred to the church of the Capuchin monastery in Günzburg. His widow as also buried there, in 1627. When the monastery was demolished in 1806, both bodies were transferred to St. Martin's church in Günzburg. == Marriage and issue ==