 In 1636 Shah Jahan organized a grand campaign against the southern sultanates in which Jai Singh played a leading part—later this same army was sent to campaign against the Gond kingdoms.For his part in these successful ventures Jai Singh was promoted to the rank of commander of 5000 and the district of Chatsu (in Ajmer) was added to his kingdom.By defeating the Meo robber tribes in the north of Amber, Jai Singh further increased the size of his ancestral kingdom.