Battle of Dilam was a major battle of the Unification War between Rashidi and Saudi rebels. It occurred on 27 January 1903, in the town of Dilam south of Riyadh, the capital of the present day Saudi Arabia.After one year of conquest of Riyadh, Ibn Saud planned to grap Rashidis away from Riyadh by fake news. Ibn Saud deployed 1,000 fighters in Riyadh and left the city with another 3,500 and captured Dilam.