La Neige Noir
From ThreeA Wiki
La Neige Noir, also known as the "Bremmen Ship-Yard Nuking of '71," is an important event in World War Robot history, though not many details are known a this time. La Neige Noir translates to "The Black Snow." There is reason to believe that Blanc de Plume is related to this incident, which is described as "a protest from mother nature" where black snow fell for three weeks.