Messervy was appointed commander of Gazelle Force.[14] Created on 16 October 1940, it was a mobile reconnaissance and strike formation of expanded battalion size created from elements of 5th Indian Division. During the ensuing East African Campaign, Messervy commanded Gazelle Force with notable success, latterly attached to the Indian 4th Infantry Division. By 13 February 1941, the campaign had become static and Messervy's formation was disbanded.[15]