 A Boer force of about 2,000 men had entrenched on the range of Belmont kopje to delay their advance.Methuen sent the Guards Brigade on a night march to outflank the Boers, but due to faulty maps the Grenadier Guards found themselves in front of the Boer position instead.The Guards, the 9th Brigade and the Naval Brigade assaulted the Boers over open ground, suffering about 200 casualties.