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// Intro (basically everything you need to know before starting this) 
// Story: The Great Equestrian War 
// by Thegrohingnation 
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For centuries, there has been a bitter feud between the humans of Deutschland and the horses of Saddle Arabia. While the humans became allies with the dragon lands for their gunpowder, the Saddle Arabians sided with the pony kingdom- Equestria. Opting to stay out of the fighting, the princesses decided on aiding the Saddle Arabians with supply shipments; while the dragons also sent supplies to the humans. This shook the relationship between Deutschland and Equestria, however it was eventually reconnected. It was even stronger than before with tourism and immigrants from both kingdoms





200 years before Luna's return, Princess Celestia was in a panic as the cities of Manedleton, Capall, and Chapaillíní wanted to break away from Equestria. Princess Celestia, fearing a civil war,  decided to send in the royal guard to calm the uprising, but was met with more resistance. For three months, several small skirmishes were scattered throughout the area. Most famously was the battle of sourdough hill where the guard launched a massive artillery strike on the rebel position in attempts to stop the rebellion. More royal guard companies were sent in, most of the ponies left. They had packed up and left, and headed to Deutschland; where they were welcomed with open arms. From there, they created the first Pony Brigade-An entire brigade of pony volunteers.





Around the same time as the Pony Uprising, the leaders of Deutschland and Saddle Arabia had been making great attempts in ending the hostilities. They had set up numerous treaties and trade deals. Ultimately, the current Sultan of Saddle decided that Saddle Arabia has had enough of Deutschland's industrialism influence and ends the treaties, secretly sending thousands of troops to the border; calling it "The Necessary Crusade" for his country.





Here is an example of the uniforms for each kingdom
 
Equestrian Royal Guard (There will be other variants of their uniforms)


Saddle Arabian Infantry (ignore the bolt action)


Deutschland Infantry 





Weapons (because everyone loves weapons)

Deutschland

Deutschland musket (1809 Potsdam Musket)

Dragoons' Revolver Rifle (1858 Remington Black Powder Revolving Carbine)

Officers' pistol (Prussian Colt Model 1851)

Equestria

Standard Royal Guard Musket (1853 Enfield)

Equestrian repeating rifle used by cavalry and Wonderbolts ( Winchester model 1895)

Officers' pistol (Webley Mark IV revolver)



Saddle Arabia

Saddle Arabian Rifle (Shishana Rifle-Ottoman Empire)

Officer's revolver (S&W Turkish Revolver)

Saddle Arabian Breech loader (Turkish Snider Conversion Rifle) 




6 pounder cannon

Howitzer Cannon

2o pounder cannon

The Gatling gun (mostly used by the humans as an anti Pegasus gun)
ALSO 
Just want to point out that cavalry exists here. All sides will use it.