The term 'Beret Cousins' refers to two French-Canadian sisters, Marie-Paule and Louise Beret, who were both members of the Canadian Armed Forces. They served in the Royal Canadian Air Force (RCAF) and the Canadian Army Medical Corps (CAMC) respectively. TAMS is an acronym for the Canadian Army Medical Services, which is the branch of the Canadian Armed Forces responsible for providing medical care to members of the military. The Beret Cousins were both members of TAMS during their service in the Canadian Armed Forces.