Summary: Bolesław takes a break from his on-again, off-again war with the Holy Roman Empire to take up arms and invade the territory of the Kievan Rus. Along with his army, his mercenaries, and his ill-advised son-in-law Sviatapolk, Bolesław conquers the city of Kiev. His reign doesn't last for long, but it's a memorable episode in Bolesław's life.
