Complex sentence: The Seljuk army was initially victorious with Laskaris'800 Latin mercenary cavalry bearing the brunt of the Seljuk attack, but its troops stopped to plunder the Nicaean camp, allowing Theodore's forces, to rally and counter-attack the now disorganised Turks.
Split into simpler sentences: The Seljuk army was initially victorious with Laskaris'800 Latin mercenary cavalry bearing the brunt of the Seljuk attack. However, the Seljuk troops stopped to plunder the Nicaean camp, allowing Theodore's forces to rally and counter-attack the now disorganised Turks.