Documents verified:

Many third-party websites offer “ready-made PDFs.” Do not simply download a blank PDF from unverified sources, as formats vary by state and recruitment board. The correct method is to download a template and then get it notarized.

His date of birth is as per his Matriculation Certificate.

(or right-click and select "Save link as"):

The Indian Army requires an Unmarried Certificate from candidates who wish to join the army, as it serves several purposes: