The engraving presents the crossing of Vistula by Transylvanian, Wallachian & Moldavian troops under prince George Rakoczi & Ukrainian Cossacks on 8-12 April 1657 (click image to enlarge). I don't know how to tell one troop from the other. The engraving is taken from Puffendorf S. Histoire du regne de Charles Gustave Roy de Swede. 1697. The author is E. Dahlberg.