In an effort to reclaim lost territories, Jagat Singh launched military campaigns against neighboring states including Pratapgarh-Deoliya, Dungarpur, Sirohi, and Banswara. During these conflicts, the ruler of
Deoli, Jaswant Singh, was killed, leading his successor, Hari Singh, to appeal for Mughal intervention against Mewar. Jagat Singh was not discontented with this arrangement and sent an army under the command of Ram Singh to plunder the city of Deoliya (Pratapgarh) in 1628. Then the Rana sent his commander Akhai Raj to invade the town of Dungarpur and Sirohi. As a result, the town of Sirohi was exterminated and its neighboring areas were annexed to the Kingdom of Mewar. Next the chief of Banswara, Samar Singh, apologised to the Maharana and recognized his suzerainty. Although the Mughal emperor
Shah Jahan initially overlooked the situations due to his long-standing association with the family—dating back to Shah Jahan's youth as Prince Khurram, he eventually responded in 1643 when he was present in
Ajmer. Through negotiations, Jagat Singh's son,
Raj Singh I, was able to deal with the emperor there. == Cultural patronage ==