The commander of the companion cavalry at Chaeronea, his major victories came at the Hydaspes - against Porus - and Issus and Guagamela against Darius III.  
His lesser victories included Lyginus where he defeated the Triballi and the Jaxartes where he defeated the Scythians.  Among his less honorable acts were the destruction of Thebes and the slaying, in a fit of anger, of Cleitus the Black who saved his life at the Granicus.  The commander of the companion cavalry at Chaeronea, his major victories came at the Hydaspes - against Porus - and Issus and Guagamela against Darius III.  After his death, his generals Antigonus, Ptolemy, and Seleucus divided up his kingdom.  FTP, name this Macedonian prince who conquered much of the known world before dying in his 30s.
His lesser victories included Lyginus where he defeated the Triballi and the Jaxartes where he defeated the Scythians.  
Alexander the Great or Alexander III of Macedon