Mezue ahịrịokwu na-esonụ: Mgbe emechara mkpochapụ si Dunkirk, ndị agha Britain gara n'ihu na-arụ ọrụ na France, na Operation Ariel na-ekere òkè na ọkara nke abụọ nke June 1940 iji kpochapụ ndị fọdụrụ na ndị agha Britain site n'ọdụ ụgbọ mmiri dị n'ebe ọdịda anyanwụ France. "Calcutta" sonyere na Operation Ariel, na-enye mkpuchi mgbochi ụgbọelu maka ndị na-ewepụ site na Saint-Jean-de-Luz na South-East nke France, na nso ókèala na Spain site na 23 ruo 25 June, mgbe ụgbọ mmiri ahụ
Nkwekọrịta agha dị n'etiti France na Germany mere ka ndị ahụ a chụpụrụ n'obodo ha kwụsị. Na njem nlọghachi, "Calcutta" nọ na ụlọ ọrụ ndị agha Canada na, mgbe n'anyasị nke June 25 "Calcutta" kụrụ "Fraser" n'akụkụ ọnụ mmiri Gironde, na-egbutu onye na-ebibi ihe abụọ. Akụkụ ihu nke "Fraser" mikpuru ngwa ngwa, ebe akụkụ azụ ya mikpuru site na "Restigouche". "Calcutta" emebighị emebi.