New Delhi: Disappointed over the government not announcing implementation of the One Rank, One Pension (OROP) scheme, two ex-servicemen who have been part of a two-month-long protest against the delay began a fast-unto-death here Monday.

Col. Pushpender Singh (retd) and Major Singh, a retired havildar, began the hunger strike after Prime Minister Narendra Modi did not announce a firm date for launching the scheme in his Independence Day speech on Saturday.