If that has whet your appetite and you'd like a more in-depth telling of just this episode then you can skip right to : https://www.gutenberg.org/cache/epub/895/pg895-images.html#l... and enjoy.
If you have an inclination, I'd heartily recommend the entire set of books. As an anecdote, it took me 2 years of reading 10-20 minutes per night most nights. I found it extremely enlightening and entertaining (Gibbon has a wicked wit).
As much as Gibbon is not in fashion these days, the research I did showed that the essential parts of our understanding of the nuts and bolts of the history haven't changed since it was written, and I don't think anyone else has contextualized and editorialized the whole story with as much intelligence and careful thought since.
I also found pretty well all the complaints about Gibbon's interpretation to have actually been though about and answered _by_ Gibbon in the text (in eloquent detail!), which I found surprising given the frequency with which he seems to be dismissed with simplistic arguments.