Indian Railways — pet exemption for ex servicemen in rrb group d

As per pet is concerned for exservicemen in rpf selection in railway, they are exempted from pet but in same railway for group d recruitment exservicemen are not exempted from pet.in ssb, delhi police, ssc cpo and all other exam also exservicemen are exempted from pet reason behind is as they have put up 20 year's of service to the nation. After completion of 20 year's again railway is asking for physical endurance test with 18 to 20 years old boys. Isn't it some kind of mental and physical harassment to the exservicemen. They should immediately be exempted from pet to show them minimum respect.