Explanation:

The 13th Rajputs (The Shekhawati Regiment) was an infantry regiment of the Bengal Army, and later of the British Indian Army. They could trace their origins to the Shekhawati Regiment raised in 1835, as part of the Jaipur contingent of the Honourable East India Company and were taken into the Company's service as a local battalion 8 years later. They fought in the Battle of Aliwal in the First Anglo-Sikh War.