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Events on Saturday 22 August 1040 1
1040Battle of ChlumecDuke Bretislav I of Bohemia routs an invading German armyHoly Roman Emperor Henry III led an invasion of Bohemia to punish Duke Bretislav I, who had seized Polish territory and refused to pay tribute. The German army was ambushed and decisively defeated in the Chlumec pass. The defeat forced Henry III to abandon the campaign and negotiate with Bretislav the following year.