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 "HMCS Buctouche"): HMCS "Buctouche" was a Flower-class corvette that served in the Royal Canadian Navy (RCN) during the Second World War.
Relevant evidence: Yes