Question: HMCS "Buctouche" was a Flower-class corvette that served in which organization, during the Second World War, she served primarily in the Battle of the Atlantic as a convoy escort?
Sentence (from "Battle of the Atlantic"): The convoys, coming mainly from North America and predominantly going to the United Kingdom and the Soviet Union, were protected for the most part by the British and Canadian navies and air forces.
Relevant evidence: No