Puranmal was the first person to realize that Mughals were trustworthy. They were not like the old stock of Muslim rulers. It was Puranmal who first offered services of Rajputs to Mughals. Thus, Kachwahas became the first allies of Mughals in Rajputana. Bharmal's policy towards Mughals was merely extension of his brothers policy.
Bahadur Shah was pursuing a policy of expansion. He helped and sent Tatar Khan Lodi to occupy the fort of Bayana. He occupied the fort of Bayana which was under Mughal occupation since the time of Babur. Humayun sent his brothers Askari Mirza and Hindal Mirza to recapture the fort. Puranmal, then Raja of Amer, fought in the battle called the Battle of Mandrail in favour of Mughals in 1534.
Next year, Bahadur Shah of Gujrat besieged the fort of Chittor, upon which Humayun himself started to fight against him. Rani Karmawati the widow of Rana Sanga was ruling Chittor as regent. She also tried to be friendly with Mughals and sent a Rakhi to Humayun, but Humayun did not arrive in time either due to his belief or slackness. If he would have arrived in time and helped Karmawati, perhaps it would have been Sisodias as their close allies. As a result, Chittor was crushed and all the women in the fort committed Jauhar and the men died in the war