first theatre of war , South Africa
Difficult to prove other than by time-line, but I think this is a mistake, probably by someone who had (like me until yesterday) no idea where Jubaland was.
1915 May 25. Lieutenant L. J. Devereux, 9th (Reserve) Battalion, The Lincolnshire Regiment, is transferred .to the General List whilst employed with The King's African Rifles. He arrived in East Africa on 12 June.
A later Medical Board 1917 Jan 8.at the British General Hospital, Nairobi, found “… that this officer is suffering from the effects of numerous attacks of malaria during 19 month's service in Jubaland
. The Board is of the opinion that he is at present unfit for service and recommend that he be invalided to England for further treatment.“