Alternative History
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Operation Backdoor was a major military initiative by the United States and Colombia during the Brazilian War, in which Allied troops and Republicano guerrillas would sneak through the mountains of Peru to establish a supply chain and then attack Cuiaba from Peru, taking the city by surprise. A major strategic and tactical achievement, the Allies were able to sneak close to 12,000 soldiers and fighters through the Andes, deep in Peruvian territory, with the assistance of the CIA and American Special Forces. On July 18, 1981, in the heart of the local winter, the Allies attacked Cuiaba in the Battle of Cuiaba, and Operation Backdoor's strategic goals were achieved. Through early 1983, the rebel stronghold of Cuiaba was kept alive through secretive weapons and food supply routes through Peru and regular airdrops, and the city became a major base for rebel operations and a staging ground for Allied bombing runs, despite the attention focused on the city by Brazilian forces.

The operation to keep Cuiaba fed through 1983 was officially called Operation Special Delivery, but is typically associated with Backdoor.

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