Exceedingly strong (surpassing the strength of both Sangheili and SPARTAN-IIs/IIIs), the Jiralhanae place a greater emphasis on brutality than wisdom and are on the whole a savage species. Preferring this potential for blind obedience, the High Prophet of Truth began plans to replace the Sangheili with Jiralhanae, slowly placing the latter in higher positions and giving them greater allowances than Sangheili troops would receive. Finally, on Truth's orders, the Jiralhanae began a galaxy-wide purge of Sangheili High Councilors and commanders, sparking a cataclysmic civil war known as the Great Schism that led to the dissolution of the Covenant. This civil war would continue well after the end of the Human-Covenant War.