Ptolemy IV Philopator

Ptolemy IV led a Ptolemaic army that included 20,000 native Egyptian soldiers to defeat the Seleucid king Antiochus III at Raphia. This victory secured Ptolemaic control over Coele-Syria and temporarily halted Seleucid expansion, but the use of Egyptian troops later fueled native revolts.

Following the Battle of Raphia, native Egyptian priests led a rebellion against Ptolemaic rule, exploiting the military training given to Egyptians. The revolt established an independent Egyptian kingdom in Upper Egypt that lasted until 186 BC, weakening Ptolemaic control.

Ptolemy IV's chief ministers Sosibius and Agathocles were killed by a mob in Alexandria after his death. Their corrupt rule and the king's neglect of state affairs had caused widespread discontent, leading to a power vacuum and the accession of the child king Ptolemy V.