The Invasion of Waikato took place from the 12th of July 1863 and carried on until the 17th of April 1864. The commander of the British Army, Lieutenant General Duncan Cameron ordered a force to march across the Mangatawhiri Stream and into Waikato which begun the Invasion of Waikato.
On the 17th of July 1863 the british army came across Maori on Koheroa Ridge. Six of them were killed and thirty three were injured. Thirty Maori were killed as well.
On the 22 July - 14th September 1863, The British and Maori were involved in skirmishes at Kitikiti, Pokeno, Camerontown, Kakaramea and Pukekohe East.
The British Army attacked the Rangiriri fortress with beginning force of 850 officers and men, engineers, artillery and infantry regulars. During the night, most Māori withdrew south, getting through the British Army barricade. The Māori King Tawhiao as well as others.
Maori hoist white flag. British Army Officers entered the Pa to discuss surrender. Maori were captured and sent to Auckland. A large Maori force withdrew attack on Paetahi, learning of surrender.