Battle of Dorylaeum: Crusaders led by prince Bohemond of Taranto defeat a Seljuk army led by sultan Kilij Arslan I.

The Battle of Dorylaeum took place during the First Crusade on 1 July 1097 between the crusader forces and the Seljuk Turks, near the city of Dorylaeum in Anatolia. Though the Turkish forces of Kilij Arslan nearly wiped out the Crusader contingent of Bohemond, other Crusaders arrived just in time to reverse the course of the battle.

The Crusades were a series of religious wars initiated, supported, and at times directed by the Papacy during the Middle Ages. The most prominent of these were the campaigns to the Holy Land aimed at reclaiming Jerusalem and its surrounding territories from Muslim rule. Beginning with the First Crusade, which culminated in the capture of Jerusalem in 1099, these expeditions spanned centuries and became a central aspect of European political, religious, and military history.

Bohemond I of Antioch, also known as Bohemond of Taranto or Bohemond of Hauteville, was the prince of Taranto from 1089 to 1111 and the prince of Antioch from 1098 to 1111. He was a leader of the First Crusade, leading a contingent of Normans on the quest eastward. Knowledgeable about the Byzantine Empire through earlier campaigns with his father, he was the most experienced military leader of the crusade.

The Seljuk dynasty, or Seljukids alternatively spelled as Saljuqids or Seljuk Turks, was an Oghuz Turkic, Sunni Muslim dynasty that gradually became Persianate and contributed to Turco-Persian culture.

Kilij Arslan ibn Suleiman (‎1079–1107) was the Seljuk sultan of Rûm. He reigned from 1092 until his death in 1107. He ruled the Sultanate during the time of the First Crusade and thus faced the earliest attacks from Christian forces. He also re-established the Sultanate of Rum after the death of Malik Shah I of the Seljuk Empire and defeated the Crusaders in three battles during the Crusade of 1101. Kilij Arslan was the first Muslim and Turkish commander to fight against the Crusaders, commanding his horse archers as a teenager.