Arnoraja's battle against Kumarapala. It is possible that Ballala had to change his plans because of the matrimonial alliance between Arnoraja and Kumarapala. Two of Kumarapala's generals - Vijaya and Krishna - betrayed him, and joined Ballala. Kumarapala then sent an army against Ballala around 1150-51 CE. Kumarapala's Abu Paramara feudatory Yashodhavala killed Ballala in a battle, as attested by a Mount Abu inscription. The Vadnagar prashasti inscription of Kumarapala boasts that the head of the lord of Malwa hung at the gates of the Chaulukya palace. This "lord of Malwa" is identified with Ballala. Mallikarjuna Kumarapala sent an army against Mallikarjuna, the Shilahara king of northern Konkana. This campaign resulted in Mallikarjuna's death. According to Merutunga, Kumarapala ordered an attack against Mallikarjuna, because the Shilahara king bore the pompous title raja-pitamiha ("grandfather of kings"). However, the earlier writers such as Hemachandra do not mention any such reason for Kumarapala's aggression. This claim appears to be an invention of the later writers. It is possible that Kumarapala simply wanted to expand his kingdom, or was forced to take action against Mallikarjuna after a Shilhara raid in southern Gujarat. Merutunga states that Kumarapala's army was led by Amrabhata (alias Ambada), the son of Udayana. Amrabhata's first march against Mallikarjuna was unsuccessful: the Shilaharas attacked him while his army was crossing the Kalavini river. Amrabhata was forced to retreat, and lived in seclusion as a result of this embarrassment. But Kumarapala dispatched him to Konkana with another army. During this second invasion, Amrabhata defeated Mallikarjuna. Jayasimha Suri and Jina-Mandana state that the Chaulukya army defeated Mallikarjuna during the first invasion. Apart from Amrabhata, the Chahamana prince Someshvara and the Abu Paramara prince Dharavarsha (son of Yashodhavala) appear to have participated in this battle. The Abu prashasti of Tejapala states that Yashodhavala performed well in a battle that made the wives of the Kunkuna (Konkana) ruler cry. According to Hemachandra, Mallikarjuna fell from his elephant during the battle, and was beheaded by the Gujarat soldiers. The Chahamana chronicle Prithviraja Vijaya claims that Someshvara personally beheaded Mallikarjuna. Balachandra's Vasantavilasa claims that it Amrabhata killed Mallikarjuna. It appears that the Amrabhata was the nominal leader of the second campaign, which was actually led by Someshvara and Dharavarsha. Saurashtra Kumarapala waged war against a ruler of Saurashtra. Later chroniclers such as Merutunga, Jayasimha Suri and Jina-Mandana state that Kumarapala's army was led by Udayana, who was