Is it a good thing to allow women to be able to serve in the military, or should it be reserved only for men?

I thought about having a military career especially in the navy, sometimes I always think about it.

But I remember my grandfather thought it ridiculous , for him the army should only be for men
Is it a good thing to allow women to be able to serve in the military, or should it be reserved only for men?
Is it a good thing to allow women to be able to serve in the military, or should it be reserved only for men?
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