Battle of Heraclea

In mid-August 1101, the contingents led by William IX of Aquitaine, Stephen of Blois and Hugh of Vermandois were surprised near Heraclea of ​​Cappadocia: forced to cross a narrow gorge, they were surrounded by Kilij Arslan and his Danishmendide allies. After two days of harassing combat, the crusader columns gave way, the cavalry was isolated and the army was almost wiped out, with only a handful of lords reaching the Byzantine asylum of Germanicaea. Two distinct defeats at Heraclea Cybistra in 1101 (English Wikipedia) — Nevers then Aquitaine/Bavaria.

This first army of the crusade of 1101 had taken Ancyra with Byzantine support before setting out towards Cilicia, hoping to join the prisoner Bohemond and free Antioch. The leaders ignored the disappearance of the Turkish scouts and advanced without cohesion through the foothills of the Taurus, exhausted by the heat and the shortage of forage. Kilij Arslan, reconstituted after 1097, coordinated his horsemen with the emir of Danishmend to occupy the passes around Heraclea and cut off the water points. Two distinct defeats at Heraclea Cybistra in 1101 (English Wikipedia) — Nevers then Aquitaine/Bavaria.

English Wikipedia Crusade of 1101 / Battles of Heraclea notes: (1) Nevers fails at Iconium, advances to Heraclea; Turks evacuate, destroy crops/wells; attack when crusaders run to a river — almost the whole army wiped out, Nevers escapes with few men. (2) September: Aquitanian-Bavarian host similarly ambushed; William IX and Welf escape; Hugh dies at Tarsus (18 Oct). Stephen of Blois is not at Heraclea (flight from Mersivan to Sinope). No reliable 30k/25k strengths.

The destruction of this first contingent caused the death of Hugh of Vermandois and the shameful flight of Stephen of Blois, whose reputation was irreparably damaged. The Seljuks recovered weapons, mounts and considerable ransoms, ensuring control of the Anatolian plateaus. The news of the debacle, transmitted to Constantinople, undermined the trust between the following crusaders and the emperor Alexis I, who hesitated to provide new guides. Two distinct defeats at Heraclea Cybistra in 1101 (English Wikipedia) — Nevers then Aquitaine/Bavaria.