Question: "The Darkest Hour" generally refers to the time when Britain was under threat of invasion in 1940 and 1941. Who coined the phrase?
Sentence (from "Battle of Dunkirk"): As part of the Battle of France on the Western Front, the Battle of Dunkirk was the defence and evacuation of British and Allied forces in Europe from 26 May to 4 June 1940.
Relevant evidence: Yes