Alauddin Khalji's invasion of Mithila

Alauddin Khalji's invasion of Mithila was a military campaign conducted by Alauddin Khalji of the Delhi Sultanate against the Karnat dynasty of Mithila, led by Shaktisimharadeva, in 1297-98 C.E in present-day Northern Bihar.

The only source for the conflict between the Delhi Sultanate and Mithila is Mulla Taqia. According to him, the Mithila king Shaktisimhadeva defeated the Delhi army in the first three battles, fought at Maqbara and Sakkuri. In the final battle, the Mithila king was defeated and arrested. According to the Mithila tradition, Shaktisimharadeva subsequently served as a commander of the Delhi army during Alauddin Khalji's conquest of Ranthambore, but this tradition is not supported by any reliable evidence. Nevertheless, the Mithila king likely became an ally or a vassal of Alauddin Khalji: according to Mulla Taqia, he financially supported Alauddin Khalji. Mithila appears to have regained its independent status as an ally of the Delhi Sultanate, until its annexation by the Tughluq dynasty in 1324.

Background
After annexing most of Western India, Alauddin set his site to the Eastwards and he finally moved to Mithila where him and his army were met with Shaktisimhadeva of the Karnat Dynasty of Mithila whose ancestor was Ramasimhadeva who himself countered Delhi and Bengal invasions by defeating Bakhtiyar Khalji. Shaktisimhadeva's main strength was in his minister Vireshvara, who himself was the father of Chandeshvara Thakur.

Battles
Following the majority of his conquests, Alauddin Khalji eventually encountered Northern Bihar in the Mithila region. There he was immediately confronted by Shaktisimhadeva, successors to Ramasimhadeva's rule. Four battles occurred between them with reports from Mulla Taqia indicating that Alauddin Khalji suffered defeat twice in the first two skirmishes at the hands of Karnat King and his commander from Mithila. However, Khalji gained an upper hand during the third battle annexing certain regions where he sent his commander, Seikh Ismail to capture the King but this proved short lived as Shaktisimhadeva regained those territories against Alauddin's strength when they became independent in their final verdict - all according to accounts provided by Mulla Taqia himself.

Aftermath
After the arrest of Mithila king Shaktisimhadeva, He was appointed as the commander-in-chief of Alauddin's army against his enemies. His imprisonment was short-lived, He and his commander Vireshvara were able to gain independence again and maintained alliance with the Alauddin Khalji. The Tughlaq regime subsequently took over with Chandeshvara Thakur, son of Vireshvara Thakur serving as commander for the Karnat Dynasty later. While attempting to rescue people in the Nepal region from hostile Tughlaq generals; he had some skirmishes but ultimately succeeded against them. During this era, King Harisimhadeva ascended to power after Shaktisimhadeva passed away as his successor.