Ptolemy (Peter, Mike & Chris): Phalanx div, 2 light infantry bow div, 1 allied horse archer div (from Leonadis
Perdiccus (SteveJ, Mark & Mitch): Infantry div of phalnax, medium bows & small light jav, 2 cav divs of 3 heavy & 2 horse archer.
Ptolemy has his phalanx between the woods with light troops in each wood & horse archers in front. Perdiccus has sprung a surprise by putting his infantry on the lefts & his cavalry in the centre.Ptolemy advances his whole army. Perdiccus' infantry advance is slowed by sand compounded by blunders while his light cavalry advances driving back their opposite numbers.
It's a moot point whether Perdiccus' flank attack was a good idea. Perdicus' large infantry division is an unwieldy beast and it only took a couple of bad command rolls to get the flank march bogged down in the sand. But it did avoid the risk of a frontal attack with a wood full or archers on each flank. Instead it provoked Ptolemy into attacking in the centre - an attack that ended in stalemate, but could easily have lost him his phalanx & with it the battle. As it was he was able to rally his shaken phalanxes before Perdiccus could organise his counterattack. In the end it was the shear weight of Egyptian bowfire on the flanks that won the battle. On the Eygptian right the bowmen were protected by the woods & on the right where they advanced in the open they were fortunate that Perdiccus' cavalry was so weakened by the phalanx attack that they never had to face a serious cavalry attack.