In 63 BC, following his victory in the
Third Mithridatic War,
Pompey the Great intervened in a civil war in the
Hasmonean Kingdom between
Hyrcanus II and
Aristobulus II,
conquered Judea and appointed Hyrcanus
High Priest. Under Hyrcanus, real power rested with his chief minister,
Antipater the Idumaean. In 49 BC Antipater prompted Hyrcanus to side with
Julius Caesar during
Caesar's Civil War. Following his victory, Caesar bestowed the title of
ethnarch on Hyrcanus and
epitropos (or
Procurator) on Antipater. A few years later, Antipater appointed his sons
Phasael and
Herod military governors of Jerusalem and the
Galilee respectively. Between 39 and 38 BC, the Roman general
Publius Ventidius Bassus defeated the Parthian army, sending troops under the command of Poppaedius Silo to await the arrival of Herod. Herod landed at
Ptolemais and began his campaign against Antigonus with the conquest of the Galilee, marched down the coast to take
Jaffa and then relieved Masada, where his family was still holed up. He then marched on Jerusalem, hoping to capture the city and bring a swift end to the war. Faced with corruption among his Roman officers, mutinous Roman troops and Antigonus' guerrillas, however, Herod was forced to abandon his siege of Jerusalem. He operated in Judea, Samaria and the Galilee instead, fighting against both insurgents and bandits, while sending his brother Joseph to deal with Idumaea. By late 38 BC, reinforced by several
Roman legions and having fought two years of counter-insurgency, Herod was finally able to pacify the Galilee and march south towards Jerusalem. Antigonus attempted to face Herod in a pitched battle, striking against both
Jericho and
Samaria, but both efforts were defeated. Herod once again pitched camp outside Jerusalem, though the onset of winter brought military operations to a halt. == Siege ==