The Knights Templar, also known as the Templar Knights, were one of the most significant military-religious-economic organizations of the Medieval period. Founded in 1119 to protect Christian pilgrims traveling to the Holy Land, they later participated in the Crusades. Below are some of the major battles involving the Knights Templar:
Battle of Montgisard (1177): Despite being outnumbered, the Knights Templar, under the leadership of Baldwin IV of Jerusalem, achieved a significant victory against Saladin's forces. This battle is one of the Templars' greatest victories, showcasing their exceptional combat spirit and military skills. 
Battle of Hattin (1187): This battle was a major defeat for the Christian forces, including the Knights Templar, against Saladin's army. The loss led to the fall of Jerusalem and marked the beginning of the Third Crusade.
The Third Crusade (1189-1192): The Knights Templar played a crucial role in this Crusade, especially in the Siege of Acre. They provided not only military support but also financial and logistical assistance to the Crusader forces.
Battle of La Forbie (1244): This was one of the largest battles between the Knights Templar and Muslim forces, resulting in a devastating defeat for the Templars and their allies. This event significantly weakened the Templars' presence in the Holy Land.
The Arrest of the Knights Templar (1307): Although not a battle, this event marked the downfall of the Knights Templar. On October 13, 1307, King Philip IV of France ordered the arrest of all Templars in France, accusing them of various charges including heresy and embezzlement. This led to the dissolution of the Knights Templar by Pope Clement V in 1312.
These battles and events are just a part of the complex and fascinating history of the Knights Templar, an organization that has left a profound impact on Medieval history.