Marines v. Romans

I’m only vaguely familiar with the concept of flash fiction, but it seems to be what I once knew as postcard fiction, but in an internet context. In any event, thanks to the good folks at BoingBoing, I learned of a flash fiction thread/series by one Prufrock451 at Reddit which was spawned from the question: Could I destroy the entire Roman Empire during the reign of Augustus if I traveled back in time with a modern U.S. Marine infantry battalion or MEU? The story has spawned a subreddit, apparently … personally, I think Augustus needs more input from Agrippa …