The Pig War was a confrontation in 1859 between the United States and the United Kingdom over the British–U.S. border in the San Juan Islands, between Vancouver Island (present-day Canada) and the Washington Territory (present-day State of Washington).

By spring 1859, 18 Americans had settled on claims staked on prime HBC sheep grazing lands. They expected the U.S. Government to recognize their validity, but the British considered the claims illegal and the claimants little more than "squatters" or trespassers.

‘The Pig War’ is perhaps one of the most obscure and unusual wars in history. The story begins back in 1846 when the Oregon Treaty was signed between the US and Britain.

2015年6月2日 · After years of joint occupation, on November 1872 the British forces finally withdrew, the Americans followed by July 1874, and so ended a cold war lasting almost 20 years that had produced only one casualty – a particularly hungry and curious pig.

2021年8月6日 · The “Pig War” of 1859 was a confrontation between the United States and Great Britain over the location of the international border in the San Juan Islands.

2024年5月18日 · The Pig War of 1859 was a confrontation between America and the United Kingdom over the British-U.S. border in the San Juan Islands — and it was caused by a pig. The dispute began when a farmer shot an Englishman's pig for eating his potatoes.

2001年8月19日 · In 1859, the United States and Great Britain confronted each other in the San Juan Islands of the Pacific Northwest, nearly engaging in armed conflict over disputed territory and a dead pig. The American army officer knew that the odds against him were overwhelming.