Two of the ex-servicemen on an indefinite hunger strike at the Jantar Mantar here to demand implementation of the “One Rank, One Pension (OROP)” scheme were hospitalised on Saturday. They are retired Havaldar Abhilekh Singh and retired Havaldar Major Singh. Four ex-servicemen were taken to hospital earlier, while others continue to sit on a fast-unto-death at the Jantar Mantar.