Afghanistan is not Canada’s first war in Asia. We’ve been there before, a half century ago … in Korea. And it was a meat grinder, scarcely remembered now … a war in which on one hilltop, on one April night, freshly-minted Canadians soldiers made a desperate stand that prevented catastrophe. In all, twenty-five thousand Canadians fought in Korea. By the time the shooting stopped, more than five hundred had been killed on lonely hilltops and in desolate ravines. Five hundred … in only two years....