Juan Island, and the British Hudson's Bay Company establishing a farm on the southern tip of the island. In 1859, an American killed a stray British-owned pig, sparking the international dispute known as the Pig War. The American homesteaders requested military protection, resulting in the establishment of the American camp, while the British sent Royal Navy ships. Cooler heads prevailed, and an agreement was reached whereby both sides would maintain camps on the island until the dispute could be resolved through diplomacy. From 1860 to 1872, British Royal Marines occupied a camp on the northwestern part of the island. The American garrison included Henry Martyn Robert, author of Robert's Rules of Order. The period of military occupation was peaceful; a road was built between the two camps, and Americans in the village of San Juan engaged in commerce with both encampments. As part of the 1871 Treaty of Washington, the two countries agreed that the matter of the islands would be arbitrated by the German Kaiser Wilhelm I. The following year he declared the boundary to be the Haro Strait, thus awarding the islands to the United States. The British withdrew from their camp soon after, and the American camp was reduced in size and scope. The buildings and properties were sold as surplus or abandoned. The British camp was homesteaded in 1876 by William Crook, a farmer and carpenter, whose son built a house in the camp area in the early 20th century. The Crooks donated their property to the state beginning in the 1950s, and the state also acquired land around the American camp beginning in 1951. These properties formed the core of what became this park in 1966. English Camp The English Camp site is on Garrison Bay on the island's northwestern shore. Today the Union Jack still flies there, being raised and lowered daily by park rangers, making it one of the very few places without diplomatic status where US government employees regularly hoist the flag of another country. Surviving buildings from the British occupation include a commissary, barracks, blockhouse, and hospital; the latter building was one that was sold and moved from the site, but was later acquired by the park and returned. American Camp The American Camp site is on the island's southernmost peninsula, and partially overlaps the original Hudson's Bay Company farm. The park property also includes the original site of San Juan