In Was Miles exaggerating the number of Dendarii to dissuade his captors from using his people?, I made the bold claim that Miles believed that the Dendarii Free Mercenaries would disintegrate without him to keep them united. Before he left for the final time in Memory, he left them under the extremely capable leadership of Elli Quinn. In The Vor Game, we see that the organization was still not entirely stable, with him returning to a mutiny in progress. But that was shortly after he'd started the company, and by the time of Memory, he's been leading them, I think, for about a decade.
Given that subsequent books deal with the years after the retirement of Admiral Naismith, is there any evidence of whether the Dendarii Free Mercenaries survived his retirement? I suspect the answer probably is in the books, but I don't have time to reread them at the moment, so I'm going to substitute a 200 point bounty (once it lets me add one) for time.