Gerald Russell Smallwood (1889–1977) was an officer in the British Army during World War II. In 1939, at the outbreak of war, Brigadier Smallwood commanded the Nigerian Brigade. By 1940, his brigade was named the 3rd Nigerian Brigade. In July 1940, under the terms of a war contingency plan, the 3rd Nigerian Brigade was sent to East Africa. There, the Nigerian brigade was joined by two brigades of the King's African Rifles (KAR) to form the 1st African Division. Smallwood was the acting Commanding Officer of this division during its formation. In 1942, Smallwood was promoted to Major-General.