I might well have maintained the same psychological denial as you went through, Daryl, had later rapes not rendered unsustainable the denial that set in after the first rape.
Like you, I know I'm not the only one my former instructor raped. He told me so. And several experts who have reviewed the facts of my case have said that, given the specifics of his behaviour, its impossible that I've been the only one.
As for my "courage" -- I wouldn't call it that. I've just reached a point where I can look back on the devastation of almost the whole of my adult life, and I've realized I have nothing more to lose. There is literally no further harm that monster can inflict upon me.
Again, I am so very sorry your attackers were never brought to justice, Daryl.