The Mexican Liturgical War

Timeframe: 1739-1741; reprisals continue into the 1740s
Belligerents:

• Rebels in the Moorish New World, supported by France and Sodalites
• Umayyad Caliphate of Seville

Outcome: Tactical defeat of the rebellion; strategic defeat for Umayyad Seville

By 1738, dystopian Catholic France was pretty clearly losing the war for France-Outremer. The Montagnards were up in arms, the Cubans had finally come around and started cooperating, and Umayyad Seville had far more manpower in the New World than France did. The solution? Find a way to strike at the seat of the Bilad al-Aqsa itself.

Thus was born a doomed peasant revolt with far-reaching consequences.

Calling it "the Mexican Liturgical War" is mostly a matter of Mexican historiography. From the start, its goals were unclear and its forces uncoordinated. Internationally, nobody expected them to win: not the Moors, not the French, probably not even the Sodality.

The rebels of the Liturgical War

• Disenfranchised muladis. The nucleus of the revolt, which provided its organization and most of its famous representatives, weren't (for the most part) peasants but petit-bourgeoisie. IRL this would be described as urban criollo resentments toward a church dominated by peninsulares; I'm unsure what they're called here - because in addition to the colonial/metropolitan dichotomy, there was also an ethnolinguistic substrata (most of the key rebels spoke Moorish, where the hierarchs spoke Arabic amongst themselves.)
• A scattering of international Sodalites. Sodalite vows are by their very nature rather flexible, but their role in establishing Europe's early-modern educational system paid off big time here: there were a fair number of young adventurers who were finding religion, or seeking the crown of glory (or the palm of martyrdom), that managed to link up with the rebels over the course of the war.

Consequences of the Mexican Liturgical War

The Liturgical War was judged to be a complete success, later downgraded to "as complete a success as could be hoped for." At minimal loss of life and resources, the French had tied up Moorish land forces for long enough to prevent a crushing defeat; the loss of France-Outremer looked bigger than it was, because France was still able to maintain control of Guaquaquite.

France could say this, of course, because France was run by dystopian Catholics. In the New World, the politicized historiography of Reclamation has turned it into the Armenian genocide, only in Mexico:

• Umayyad Seville had a diplomatic nightmare. There were just enough foreign rebel leaders that most of the bigger Catholic states in Europe had one or two colorful figures who'd died fighting, and the Sodality dominated the discourse.
• The international support for the Mexican Liturgical War definitely shaped Roman Catholicism in Mexico. The G.P. definitely has a Cathedral of the Martyrs to commemorate all of them; I wouldn't be surprised if the capital's main streets (or possibly some of its embassy buildings) were named after the individuals.
• To offset the costs of the campaign, lots of (mostly urban) rebels were enslaved and sold abroad, mostly in the Caribbean. Their assets were seized too, and redistributed however the military governors saw fit. (Some of Mexico's modern latifundia established themselves at this point, when well-funded landless biladis bought up entire depopulated villages.)
• Unable to trust the local elites, Seville subordinated the local militia leadership to hand-picked Muslim elites, reinforced with Muslim troops. Enough manpower was sunk into garrisoning al-Aqsa that Seville was slightly undermanned on the continent for the rest of its independent existence. Without the Liturgical War, Umayyad Seville might very well have survived to the present day.
• The Isidoran hierarchy was reinstated, and immediately branded as collaborationist. Some of the youngest deacons appointed after the Liturgical War were old enough to be tarred and feathered when the Revolt came.
• Stretches of the Thagr ash-Shamal had been almost depopulated; to keep the peace, the Umayyads offered plantation rights to Güntherites fleeing the Pomeranian Reductions. A generation later, those plantations gave rise to a fair number of national heroes and framers in the G.P. of Mexico, kicking Moorish ass and guaranteeing that the UCNA would not control the Moorish New World. And a generation after that, those same plantations were the core of a rebellion, surviving to this day as Hispano-Baltic Texas.
• That hostility towards the Isidoran hierarchy? The Pomeranian plantations took advantage of that, big time. For a solid generation after the Liturgical War, Güntheritism made some big inroads in the Moorish New World, in no small part because the Sodality was powerless to act against them.

This is a stub. It will be expanded upon at a later date.