The German–Polish War which took place from 1002 to 1018 consisted of a series of struggles between the Ottonian Henry II (first as King of Germany and then Holy Roman Emperor) and the Polish Piast ruler Boleslaw Chrobry. The locus of conflict was the control of Lusatia, Upper Lusatia, as well as Bohemia, Moravia and Slovakia. The fighting ended with the Peace of Bautzen in 1018, which left Lusatia and Upper Lusatia with Poland, but Bohemia became a duchy in the Holy Roman Empire.