In the movie kingdom of heaven what do the knights templar plan to do?

In the movie "Kingdom of Heaven," the Knights Templar plan to maintain their power and influence in Jerusalem by defending the city against Muslim forces and preserving Christian rule. They are portrayed as zealous warriors, committed to their cause, but also as symbols of the corruption and fanaticism that can accompany religious fervor. Ultimately, their actions reflect the broader conflicts of the Crusades, highlighting themes of honor, faith, and the complexities of war.