In "The Excalibur Alternative", there is a mention of the Roman Legion which was kidnapped by the Federation.
First, in Chapter XIII, they explain that the whole plot of the book was driven by that - one Guild member gained an advantage by using Romans...
"So what did the Sharnhaishians do?" the alien continued. "I'll tell you what. They went out and found another primitive world, one the Council didn't even know about yet, and they bought their damned 'Romans.' Never occurred to any of the rest of us.
"Not the Sharnhaishians, though. If they want a primitive world, they just send in their Romans. Just as primitive as the local barbarians, so the Council can't complain, and I'll say this for the Romans. They're tough. Never run into anything they couldn't handle, and the Sharnhaishians've used them to take dozens of backwater worlds away from the other guilds.
And the Commander decided to steal that same play by kidnapping more "barbarians" from Earth - this time, the protagonists:
So they gave me a chance to reclaim my career if I could find where the Romans came from, get past the Council ban, and catch us some Romans of our own. And I did it, too."
"But we're not Romans," Sir George pointed out
Then, Chapter XI of shows that the events at the conclusion of the book, were precipitated by the same Roman legion, rebelling against Sharnhaishians, taking over the ship and flying it back to Earth:
So I'd guess that the final act in that little Kabuki play will be the presentation of an official note demanding that we hand the ship—and the Romans—over on pain of military action."
... I mean, all they're really demanding is that we hand over to them a ship that's stolen private property and the crew—who are also private property, under the Federation's laws—who stole it and murdered their legal owners in the process.
I vaguely recall that I may have read something - likely by Weber - that may have described the actual adventures of this Roman Legion; but I'm not certain that it is not just a "spaghetty incident", invented just to drive plot in this book. So, my question is: