"Chanson d'automne" ("Autumn Song") is a poem by Paul Verlaine

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2. Yes, exactly; was SIGNAL that there was a GO!

In preparation for Operation Overlord, the BBC's Radio Londres signalled to the French Resistance with the opening lines of the 1866 Verlaine poem "Chanson d'Automne" to indicate the start of D-Day operations under the command of the Special Operations Executive. The first three lines of the poem, "Les sanglots longs / des violons / de l'automne" ("Long sobs of autumn violins&quot , would mean that Operation Overlord was to start within two weeks. These lines were broadcast on 1 June 1944. The next set of lines, "Blessent mon coeur / d'une langueur / monotone" ("wound my heart with a monotonous languor&quot , meant that it would start within 48 hours and that the resistance should begin sabotage operations, especially on the French railroad system; these lines were broadcast on 5 June at 23:15.[3][4][5][6]