普拉河
On 7 August, the Ashanti army appeared and attacked the centre of the British line where the best troops were held, which included some Royal Marines, the militia and a battery of Congreve rockets. The battle dissolved into hand-to-hand fighting but the Ashanti force were not doing well on their flanks whilst they looked like winning in the centre. Then the rockets were fired. The novelty of the weapons, the explosions, rocket trails, and grievous wounds caused by flying metal shards caused the Ashanti to fall back. Soon they fled leaving thousands of casualties on the field. In 1831, the Pra River was accepted as the border in a treaty.