The Adubi War (known locally as Ogun Adubi or Egba Uprising) was a conflict in June and July 1918 in the British Colony and Protectorate of Nigeria ostensibly because of the imposition of colonial taxation. Direct taxes were introduced by the colonial government along with existing forced labour obligations and fees. On 7 June, the British arrested 70 Egba chiefs and issued an ultimatum that resisters should lay down their arms, pay the taxes and obey the local leadership.