Meremere Pa of 1863
After long preparations, the invasion of the Waikato began on 12 July 1863 when British troops crossed the Mangatawhiri River just North of Mercer. The river marked part of the boundary line (aukati) between the Auckland district and the southern area under the protection (mana) of the second Maori King - Tawhiao. Thus the crossing was a declaration of war. The pa today Some 15,000 British troops on one side were pitted against perhaps at most 3,000 Maori. However the British attacking force was closer to 2,000 - it took the other 13,000 to hold the north and the armies supply lines. At Meremere the Maori had constructed a gunfighter pa on the top of the hill, over looking the Waikato River. In addition to assembling a land army, Governor Grey had acquired two steel-plated river gun-boats well-armed with heavy artillery: the Pioneer and the Avon. These vessels were supported by a fleet of smaller barges, boats and canoes (waka). By 14 August under the command of Lieutenant-Gen