The Gabiniani (in English: Gabinians) were 2000 Roman legionaries and 500 cavalrymen stationed in Egypt by the Roman general Aulus Gabinius after he had reinstated the Pharaoh Ptolemy XII Auletes on the Egyptian throne in 55 BC. The soldiers were left to protect the King, but they soon adopted the manners of their new country and became completely alienated from the Roman Republic. After the death of Auletes in 51 BC, they helped his son Ptolemy XIII in his power struggle against his sister Cleopatra and even involved Julius Caesar, the supporter of Cleopatra, during Caesar's Civil War up to the siege of Alexandria (48–47 BC) in violent battles.