With a lot of these historic accusations, the person you would have had to complain to was, more than likely, a man.
Way back when, as others have said, women just accepted that this was the way "blokes" were and other blokes thought they were all in it together ha ha ha.
It's probably more common now to find a woman in the chain of command you can speak to, men are more aware of what is and isn't appropriate behaviour (well, most men, one hopes) and as more women speak out, it encourages other to do so.