Biggest Crusade ever

[Hermanubis]

1453- Every Crusader army ever assembled (each at their largest) show up at the siege of Constantinople. What happens?

[Mike Stearns]

1453- Every Crusader army ever assembled (each at their largest) show up at the siege of Constantinople. What happens?

The siege is lifted and the Byzantine Empire is saved.

[chunkeymonkey13q]

By that point though Byzantium was nearly dead... After the siege is lifted, maybe the crusaders sack the city once again?

[King Thomas]

They save the city, then take it over and loot it.The Crusaders and Byzantium never did get on.

[ShadowCommunist2009]

They pull back, suddenly worried about all the extra crusaders. After they resolve their differences, they sack Constantinople. Suddenly, as a practical joke, Josep Broz Tito appears out of nowhere, unites all the Crusaders under one banner (from the etymology of Yugoslavia let's say Pancrusaders) and leads them to the Great Schism! They break with Rome, establish a decidedly neutral kingdom in Constantinople, trade with both Catholic and Orthodox countries, and undergo the worst episode of Balkanization the world has EVER seen upon his pre-life death. He is reborn in Croatia in the twentieth century, has a wicked bad dream about his past life, and does it all over again.

[chunkeymonkey13q]

The Ottomans would eventually take over once again though...

[CalBear]

Properly led, motivated, and supplied (which would be the REAL problem, always was) with some additional ASB action that keeps them all from deciding the whole this is witchcraft or the work of the devil?

Constantinople does not fall. The Ottoman Turks are scattered, The Holy Land is returned to Christian hands. In due course, Egypt, Mecca, Medina, and all other Muslim strongholds are destroyed. Islam becomes a fugitive religion, hunted everywhere in Euroasia, The Papacy is returned to it's dominance in Europe. Butterflies in the millions arrive, by 1550 the Western World is unreconizable. Democracy reigns supreme.

OR

Scared shitless by what has happened, the Crusaders scatter and fall back toward "home" which they find unreconizable. Chaos reigns. The Ottomans take advantage of the confusion, drive on past Greece, into Europe, and everything east of the Rhine is converted to Islam. The Age of Discovery never happens. Europe west of the Rhine stagnates for centuries. The Americas are eventually colonized by the Norse & by Islamic explorers from Seville.

[chunkeymonkey13q]

But what would prevent such a large army from sacking Constantinople once again?

[Hermanubis]

Scared shitless by what has happened, the Crusaders scatter and fall back toward "home" which they find unreconizable. Chaos reigns. The Ottomans take advantage of the confusion, drive on past Greece, into Europe, and everything east of the Rhine is converted to Islam. The Age of Discovery never happens. Europe west of the Rhine stagnates for centuries. The Americas are eventually colonized by the Norse & by Islamic explorers from Seville.

The Norse are hundreds of years Christian at this point, and don't think that Seville is in Islamic hands anymore...

Anyway, both of your scenarios are generous to the extreme. The Best that could really be hoped for the forces of Islam are that the siege is lifted, the Crusaders cause some trouble in Thrace for a while, and then the Ottomans are able to mop it all up later and things proceed pretty much as OTL from there.
At this point the main power base for the Ottomans was in Europe around the area of present day Bulgaria, Northern Greece and Turkish Thrace (excepting the city of Constantinople which hadn’t fallen quite yet) if the Crusaders could cause enough trouble here the Turks could be potentially crippled forever, or driven out of Europe all together. This would probably be pretty hard thou (a lot the crusaders would be from the 11th and 12th centuries, so they wouldn’t have a lot of cannon) but maybe possible if the contemporary Christians (manly thinking the Italians and Hungarians here) would take advantage of the situation. (Still pretty hard thou. I’ve heard some call this time period the zenith of Ottoman power)
The Crusaders might actually stand better chances of heading out into Anatolia where the Ottomans weren’t quite as strong yet...

[Hermanubis]

Anything else?

[Hermanubis]

*Bump!*



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