Battle of Raphia
The Battle of Raphia, also known as the Battle of Gaza, was a battle of the Syrian Wars between Ptolemy IV of Egypt and Antiochus III the Great of the Seleucid kingdom. Fought on 22 June 217 BC near Gaza. Ptolemy had 70,000 infantry, 6,000 cavalry, and 73 war elephants. Antiochus had 62,000 infantry, 6,000 cavalry, and 103 elephants.
The kings split their elephants between the wings of their army. Each army's right wing defeated the opposing left wing and drove it from the field, leaving the Ptolomid phalanx to defeat the Seleucid infantry. Ptolemy's victory kept the province of Syria for Egypt but it was only a brief respite; at the Battle of Paneas in 198 BC Antiochus defeated Ptolemy and captured Palestine and Syria.
Ptolemy owed his victory in part to having equipped an Egyptian Phalanx which formed a large proportion of his phalangites (exactly how much is subject to academic dispute). The self confidence the Egyptians gained has been ascribed as one of the causes of the subsequent Egyptian Revolt.