from what i know, personnel who works for MINDEF is paid a slight premium over other govt agencies or ministries due to their importance and contributions.

However, with a reduction in starting salaries, mainly for fresh grads(hearsay), i cant be sure of any reviews for mid entry from other govt sectors. but of course theres a chance if you offer relevant experience.

btw, im not from HR, im a another DXO still in service. just my observations and 2 cents.