Rivalry with Ngāpuhi escalated in the early 19th century when Ngāpuhi acquired muskets. Ngāpuhi attacked Ngāti Whātua in 1807 or 1808 in the battle of Moremonui north of Dargaville - probably the occasion of the first use of firearms in Māori warfare. Ngāti Whātua overcame the Ngāpuhi warriors with hand weapons while Ngāpuhi were reloading their muskets, winning a decisive victory over the attackers. Ngāpuhi, led by Hongi Hika, exacted revenge in 1825 when they defeated Ngāti Whātua in the battle of Te Ika a Ranganui near Kaiwaka.