Historical Information
Because of its position, the island of Lemnos played an important part in the campaigns against Turkey during the First World War. It was occupied by a force of marines on 23 February 1915 in preparation for the military attack on Gallipoli, and Mudros became a considerable Allied camp. The 1st and 3rd Canadian Stationary Hospitals, the 3rd Australian General Hospital and other medical units were stationed on both sides of Mudros bay and a considerable Egyptian Labour Corps detachment was employed. After the evacuation of Gallipoli, a garrison remained on the island and the 1st Royal Naval Brigade was on Lemnos, Imbros and Tenedos for the first few months of 1916.
On 30 October 1918, the Armistice between the Entente Powers and Turkey was signed at Mudros.
Portianos Military Cemetery was begun in August 1915 and used until August 1920. The cemetery now contains 347 Commonwealth burial of the First World War and five war graves of other nationalities.
http://www.cwgc.org/find-a-cemetery/cemetery/69002/PORTIANOS%20MILITARY%20CEMETERY