Operation Souvenir was a Canadian military operation during the First World War. It was launched in April 1918 and aimed to capture the German-held town of Moreuil, France. The operation was successful and resulted in the capture of the town. The term SCAR is an acronym for the French phrase 'Service Canadien d'Aide et de Reconnaissance', which translates to 'Canadian Service of Aid and Reconnaissance'. This was the name of the Canadian unit that took part in the operation.