The Hawkesbury and Nepean Wars (1795–1816) were a series of wars between the Kingdom of Great Britain and the Indigenous clans of the Hawkesbury and Nepean rivers in New South Wales, Australia. The conflict consisted of three wars: Pemulwuy's War (1795–1802), Tedbury's War (1808–1809) and the Nepean War (1814–1816) as well as the interwar violence of the 1804-1805 Conflict. The war was extremely complex, as many of the Aboriginal nations occasionally allied themselves to the British in order to conquer more land for their tribes, and just as quickly returned to a state of war against the British. It was fought using mostly guerrilla-warfare tactics; however, several conventional battles also took place. The wars resulted in the defeat of the Hawkesbury and Nepean Indigenous clans who were subsequently dispossessed of their lands.