Thapa led the Param Vir Chakra winners' contingent at the Republic Day parade each year.
The government has decided to name 21 uninhabited islands in the Union territory of Andaman & Nicobar after recipients of Param Vir Chakra, the country's highest wartime gallantry award.
The name plates of Lieutenant Colonel Dhan Singh Thapa, Colonel N J Nair, Havildar Hangpan Dada and Subedar Joginder Singh were unveiled at a ceremony in Kolkata.