Maurice (539 – 27 November 602) was Byzantine Emperor from 582 to 602.

A prominent general in his youth, Maurice fought with success against the Sassanid Persians. Once he became Emperor, he brought the war with Persia to a victorious conclusion: expanding the eastern frontier dramatically and marrying his daughter to Khosrau II

Khosrau II

250px|thumb|Khosrau II 250px|thumb|Khosrau II 250px|thumb|Khosrau II (Khosrow II, Chosroes II, or Xosrov II in classical sources, sometimes called Parvez, "the Ever Victorious" – (in Persian: خسرو پرویز), was the twenty-second Sassanid King of Persia, reigning from 590 to 628...

, the Persian king.

Maurice also campaigned extensively

Maurice's Balkan campaigns

Maurice's Illyricum campaigns were a series of military expeditions conducted by emperor of Constantinopolis Maurice in an attempt to defend the Illyrian provinces of the East Roman Empire from Avars and Slavs...

 in the Balkans

Balkans

The Balkans is a geopolitical and cultural region of southeastern Europe...

 against the Avars - pushing them back across the Danube

Danube

The Danube is a river in the Central Europe and the Europe's second longest river after the Volga. It is classified as an international waterway....

 by 599.