What I'm having trouble understanding is why Corsica is so incapable of supporting an army of 1,000 men. That is just over 0.5% of the population. It was emphasized how Frederico was a military man. Like comparing to France or Sardinia or Denmark adjusted for population, peacetime strength of ~2,000, nearly doubling in war seems reasonable.
The 1767 Establishment provided for 1,110 regulars, plus an additional 480 auxiliaries (bombardieri and presidiali) who are part-timers paid significantly less. Federico added the provincial infantry, who in theory number 3,600 but only 300 are active at any one time, so we'll call that 300 "regulars" for cost purposes. By disbanding the Trabants, Theo only cut this by about 100 men, although these were the most expensive men in the army. So in 1780 the army has 1,310 "regulars" on paper, although regiments were pretty much never at paper strength in any 18th century army even during peacetime.
IOTL, the population of Corsica in 1787 was estimated by the
Plan Terrier as being 150,000. The 1801 census claimed 163,896 people. ITTL, it seems reasonable to say the population has probably reached 160,000 by 1780 owing to a generally improved economic situation, immigration (Jewish and otherwise), and 20 fewer years of civil war. So that's about 0.8% soldiers (using paper strength), which does not include anyone in the navy (including, from 1781, a "marine company" which has not been mentioned yet), any of the part-time troops or off-duty provincials, or any local militia formations like the Capraia Company. By the standards of the time, that's a pretty robust military establishment for such a small population.
A comparable example might be the Duchy of Modena, which around 1760 at the time of the Seven Years' War had about 150,000 inhabitants. During the WAS the Duke of Modena authorized the raising of an army of "2,500 regular infantrymen and 3,100 militiamen," which is around 4% of the population; during the Seven Years' War the regular army was 3,700 strong, or nearly 2.5% of the population. But Modena was only able to do that because they were being subsidized, in the WAS by the Spanish and in the SYW by the Austrians (2,700 of those 3,700 men were garrisoning Austrian Lombardy during the SYW at Austria's expense). Once the war was over the army was cut to about 1,000 men.
Corsica has plenty of willing soldiers, but it's a poor country that has real difficulty collecting taxes. Modena was a richer state and still proved unable to raise a significant army without a subsidy from the great powers.
And that is assuming Corsica doesn't go down the Prussia or Hesse paths, which seems a natural path to pursue for Prussian nobles given Corsica has a very militarized culture and at the start of the timeline already has an enormous number of people doing military service (admittedly in various foreign services, but better to have a rented out army than mere free-lancers). In which case those numbers easily can double. That of course would be ruinously expensive, but that is why you try to rent it out as much as possible. The disadvantage of course is that may get people annoyed at you. The advantage is you are a tough morsal and people will feel more interested in throwing you occasional bones. It may be a bit late for this model to fit nicely in this story, but something to think about when you rewrite.
This was certainly what Federico wanted to do, but it hasn't worked out that well for a variety of reasons. Corsica's traditional military employers - France, Spain, Venice, Naples, Genoa - all preferred to recruit their foreign regiments directly from foreign populations rather than hiring pre-existing regiments from a foreign state like Hesse-Kassel. There were exceptions to this, like the French Deux-Ponts regiment furnished by Zweibrücken, but this was an expression of political dependency which isn't really feasible for a state attempting to be neutral. Britain made use of subsidy arrangements with neutrals, but generally only during war, and typically only with the Protestant German princes. Until now the only European war since the death of Theodore I (who had no interest in running a mercenary state) has been the Russo-Turkish war, which
did involve a contracted Corsican regiment (although provided informally as to not upset the Danes).
Also, you might want to upscale the size of the French forces when you get to that in the rewrite. Like you talked about how you realized it was implausible for the Corsicans to repulse the French, but my impression was quite the opposite. Paoli's Republic had *24,000* French soldiers put it down. You did the job with 9,000. State capacity may not be Paoli-level, but it isn't OTL 1739 Corsica. Heck, even the Austrian intervention in 1732 was 12,000 men. I feel much more plausible would be for the 9,000 to fail, and then France decide it needs to save face, increase deployment well above the 10,000 men they promised and then utterly crush the Corsicans. I would go almost as far as to say the French deployment you have couldn't succeed. It would also increase your Corsica's diplomatic wiggle room. Like could the great powers invade if they wanted? Sure, but if the last intervention took nearly 20,000 men, they will be very reluctant to. And of course that is a bit much for Sardinia, who could make Corsica's life absolutely miserable, but would find it borderline impossible to do more than occupy the ports.
There is no doubt the Corsicans were very weak in the grand scheme of things, but I think you have a tendency to overstate how weak they were (a little ironic since you would tend to think an author would do the opposite for their pet country). This is not to say I don't love this timeline, I would go so far as to say it is one of the best timelines this site has produced. It seems like a good time though to make suggestions given you are currently rewriting it.
It's worth noting that while Lautrec
did succeed in defeating the Corsicans in battle, it would be inaccurate to say that he put down the rebellion with 9,000 men. The French were supported by the Genoese, who didn't do much fighting but
did garrison territory; in 1768 the Genoese seem to have mostly withdrawn by summer, which required the French to garrison everything themselves. ITTL the southern part of the island was occupied by Austrian troops, and ultimately the rebellion was
not completely defeated, as Rauschenburg held out until the French withdrawal. That said, it's certainly possible that the French could have sent more forces (even above what Genoa was willing to pay for), and that might make their ultimate victory at Ponte Leccia more plausible.
When writing this TL, I came very close to having Theodore "win" in 1740, at least to the extent that the French (and Austrians) were unable to dislodge him from the interior until the start of the WAS forced them to leave. In fact, that was the original plan I sketched out in the first post of the thread:
Carp said:
I suspect that if Theodore had been able to hang on to his throne until 1741, when the war began in earnest, the chances for a successful Corsican revolution would have increased dramatically. That may seem like a tall order given that his actual reign didn't even last a year, but it's worth noting that although Theodore himself left in 1736 some of his own German kinsmen actually held out as guerrilla leaders against the French occupation forces until the summer of 1740, less than a year before the French withdrew from the island. With a bit of luck, I don't think it's impossible—or too implausible—that Theodore could have weathered the forces arrayed against him long enough for him to become an asset to the Pragmatic Allies and fully exploit the general European war to gain Corsica its independence.
When I finally reached that point, however, I was concerned that an outright Corsican victory might seem to implausible, and it occurred to me that Theodore's travels in 1741-43, and particularly his ability to establish relationships and build support in Britain, might be advantageous for the ultimate victory of the rebels. It's not enough for them to merely "hold out" - they have to actually gain strong foreign (and ideally British) support during the WAS to pry the Genoese out of the remaining
presidi. That didn't happen IOTL despite the fact that the rebellion was rekindled after the French departure; there were some fitful attempts to support the rebels, like Rivarola's expedition and the British bombardment of Bastia, but Ajaccio and Calvi remained untouched, and even Bastia didn't remain in Rivarola's hands for long.
I could very well be wrong about that. Perhaps Theodore
succeeding in fighting off the French would have made him more credible in the eyes of the British even without his journeys in the early 1740s and his personal meetings with Carteret. I may, as you say, have underestimated the ability of the Corsicans to lead a successful defense of the interior. That would be a pretty substantial rewrite - if Theodore holds out in 1740, his travels abroad, the Colonna Mutiny, all the wrangling around the Regulation, the Battle of Morosaglia, and all the various Genoese interior campaigns between 1741 and 1744 never take place. Andergossen isn't murdered and Rauschenburg never makes his reputation as the one man who refused to surrender. Bastia and/or Ajaccio might fall more quickly. Provided that Theodore is still able to convince the British to help him, however, the
ultimate course of the TL may not be greatly changed.
Edit: And just in case it wasn't clear, I absolutely do welcome suggestions, and you're quite right that it's a good time to make them. Thank you!