The 13 Cuirassier regiments of Old Prussia (Kavallerieregimenter der altpreußischen Armee) were formed in the mid-17th to mid-18th centuries, and formed the basis of Frederick the Great's vaunted cavalry.
The 13 Cuirassier regiments of Old Prussia (Kavallerieregimenter der altpreußischen Armee) were formed in the mid-17th to mid-18th centuries, and formed the basis of Frederick the Great's vaunted cavalry. (en)