57 The Supreme Court in P. Mohan Reddy (Supra), has in fact reiterated the aspect of issue of seniority. By this amended rule, there is no disturbance to the seniority in Police force, which is based upon the date of appointment of joining the Police force. It is wrong to observe that, any seniority would be predetermined, based upon this amended rule 3(a) as the amended rule is prospective in nature. There is no retrospective effect given to the same, therefore, we are declined to accept the reason that this affects the seniority of Havaldar and/or ASI. Ultimately, the department needs to take note of their need and requirement and accordingly they have a right to have a policy and requisite rules of promotions. The Police personnel's right of promotion, therefore, ultimately depends upon the service rules, conditions, which may be amended from time to time. However, in the present case, there is no prejudice, as such, made out and/or shown, therefore, merely because the State has brought four cadres eligible for promotion on the basis of initial date of entry in the Police force, cannot be stated to be caused great prejudice to the personnel in the cadre of Havaldar and ASI, as observed. This is, in the background, as recorded above, there is no such actual data and/or