5924561 2nd Battalion, The Prince of Wales?s Leinster Regiment (Royal Canadians) disembark from a train, Upper Silesia, 1921 circa (b/w photo) by Unknown photographer, (20th century); National Army Museum, London; (add.info.: 2nd Battalion The Prince of Wales?s Leinster Regiment (Royal Canadians) disembark from a train, Silesia, 1921 circa. Deployed on post-plebiscite duties from June 1921 to March 1922. Following its wartime service on the Western Front, the 2nd Battalion briefly returned to England in 1919 before being deployed in the German town of Oppeln in Upper Silesia (now Opole in southern Poland). The Leinster Regiment recruited from five Irish counties, all of which became part of the Irish Free State in 1922. The regiment was therefore disbanded that year.); by National Army Museum ; out of copyright.