The first waves of Zulu assault were repulsed by British volley fire, but the attackers pushed on relentlessly, particularly along a vulnerable section of the British perimeter by the hospital which became the centre of fierce hand-to-hand combat. With British casualties mounting, Chard ordered his troops to withdraw behind the biscuit boxes, which left the western half of the station in Zulu hands, including the hospital, which was subsequently set alight by the attackers. Once inside, Chard ordered the construction of a redoubt made from a tall pyramid of mealie bags to provide shelter to the wounded and form the last line of defence. The Zulus continued to attack in intermittent waves during the night, but they were illuminated by the burning thatch, which enabled the defenders to spot their advances. By 5 am, the exhausted Zulus had abandoned the attack, and British reinforcements arrived later that morning. Chard counted 351 dead Zulus scattered around the perimeter. The British suffered 17 killed and 10 wounded.