The question is a good one, and the answer will suprise ppruners who think of military as strong and civil as weak.
Generally the requirements match the job, and neither is "stronger", but lately, there isn't much difference, when the military buys civil aircraft and paintes them in fighting colors.
The Black Hawk was designed to US Mil standards, and does not meet FAR, it is much better in some ways, not as good in others. If you are being shot at, it is a dream, however! It is so different that it cannot be civil certified. Look at the S92 as what the BH would be if it met FAR, that is precisely why Sikorsky made the 92.