I read this book a couple decades ago, and I can't remember the title or the author.
It was a story about an interstellar war, and about this guy who was special because of his reaction speed and his ability to pilot the ships to fight in the war. He was so valuable that they used his sperm to try and create more pilots like him. Over the years though he became more and more machine as they replaced his body parts. Till eventually he is integrated into the ship, if memory serves.
Then ... for some reason he goes searching and I think finds some higher beings, a kind o council of super aliens and eventually becomes a sort of demi god or a member of the council.
There was some interplay with a female pilot through the book as well, I think she was used as one of the potential mothers of his children to try and recreate his specialness. This failed I think, but ... for some reason ... she became a sort of counter balance to him in the story. Its mainly to get this sorted out in my head that I want to reread the book.
I was a fan of classic sci-fi at the time so I think it may have been from the 60s or so.
If anyone could point me in the right direction it would be a great help, I can't get this book out of my head and I'd really like to read it again.
The story was spread out over very long periods of time if memory serves, I can't remember if it was due to time dilation or machine augmented life spans or both, I think it was both.
PS:For Context at the time I was reading about a book a day,I read thousands over a 6 year period,which is why the author names and titles are a bit blurry sometimes.I only really remember authors If I read 10+ of their books.