French resistance in Normandy: Violet plan
D-Day and Battle of Normandy
The preparation by the Central Bureau of Information and Action (B.C.R.A.) of the sabotage plan “VIOLET” (relative to the French telecommunication networks) was done at the request of the Special Operations Executive (S.O.E.).
Conducted by volunteer engineers of the service of the Large Distance Underground Lines (in French Lignes Souterraines à Grande Distance, L.S.G.D.), these actions of resistance had for objective the paralysis of the means of command of the German forces during three days, from June 5 to June 7, 1944, during the Allied landing in Normandy.