His unit, referred to as "Holk's Horse", was known for their fierce attitude not only in battle, but also in pillage and rape - "notorious even in an age of atrocities".
He took part in the devastation and looting of the Electorate of Saxony, and faced Gustavus Adolphus of Sweden's cavalry in the Battle of Lützen.
The battle marked the end of his active career, though he remained in office as a senior commander.
[3] The following year, he died of plague in Kronborg castle, Denmark while negotiating a truce after a two-week battle near Saxony.
Holk retired after two weeks and, on Wallenstein's orders, renewed talks with Arnim who was then visiting Johann Georg.