Longuenesse (St Omer) Souvenir Cemetery, Pas de Calais, France. St. Omer was the General Headquarters of the British Expeditionary Force from October 1914 to March 1916. The town was a considerable hospital centre with the 4th, 10th, 7th Canadian, 9th Canadian and New Zealand Stationary Hospitals, the 7th, 58th (Scottish) and 59th (Northern) General Hospitals, and the 17th, 18th and 1st and 2nd Australian Casualty Clearing Stations all stationed there at some time during the war. The Commonwealth section of the cemetery contains 2,874 Commonwealth burials of the First World War (6 unidentified).

Two men of the North Irish Horse, Corporal D. W. Ritchie and Private W. Irwin, are buried here. The location of their graves is shown on the CWGC cemetery plan below.

Information and cemetery plan sourced from Commonwealth War Graves Commission www.cwgc.org. Images kindly provided by: 1. Pierre Vandervelden from his website www.inmemories.com; 2. kindly provided by Pieter van Elteren from his traces of a war website http://www.peterswar.net; 3. Steve Rogers, Project Co-ordinator of the The War Graves Photographic Project, www.twgpp.org.