Fortification
Terraces on Mt Eden, Auckland, marking the sites of the defensive pallisades and ditches of this former pā.
Their main defence was the use of earth ramparts (or terraced hillsides), topped with stakes or wicker barriers. The historically later versions were constructed by people who were fighting with muskets and hand weapons (such as spear, taiaha and mere) against the British army and armed constabulary who were armed with swords, rifles, and heavy weapons such as howitzers and rocket artillery. They were often put in place in very limited time scales, sometimes less than two days, and resisted attack for many hours and, sometimes, weeks. Military historians like John Keegan have noted that Māori recognition of the strong resistance of earth fortifications against modern weapons (especially artillery) predates the successful defensive use of trenches and sloped earth ramparts in World War I by many decades. Warrior chiefs like Te Ruki Kawiti realised these properties as a good counter to the greater firepower of the British. Thus they sometimes built pā purposefully to resist the British Empire's forces, like at Ruapekapeka, which was constructed specifically to draw the enemy, instead of protecting a specific site or place of habitation like more traditional pās. At the Battle of Ruapekapeka, the British lost 45 casualties, against only 30 amongst the Māori. Afterwards, British engineers twice surveyed the fortifications, produced a scale model and tabled the plans in the House of Commons.[4] The fortifications of such a purpose-built pa included palisades of puriri trunks and split timber, with bundles of protective flax padding, the two lines of palisade covering a firing trench with individual pits, while more defenders could use the second palisade to fire over the heads of the first below. Simple communication trenches or tunnels were also built to connect the various parts, as found at Ohaeawai Pā or Ruapekapeka. The forts could even include underground bunkers - protected by a thick layer of earth over wooden beams - which sheltered the inhabitants during periods of heavy shelling by artillery.[4] A limiting factor of the Māori fortifications that were not built as set pieces, however, was the need for the people inhabiting them to leave frequently to cultivate areas for food, or to gather it from the wilderness. Consequently, pā would often be abandoned for 4 to 6 months of each year. Examples
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