Colonel Santosh Babu, the Commanding Officer of 16 Bihar regiment who lost his life during the Galwan Valley clash with Chinese PLA personnel last year, will be posthumously awarded Maha Vir Chakra on Republic Day. On the eve of Republic Day, the government announced Gallantry Awards that honour acts of bravery and sacrifice of the officers/personnel of the Armed Forces. Here are some stories of valour that will forever remain etched in the hearts and minds of a billion Indians.