'Politician' (i) was a British special forces operation by the Special Air Service to sabotage the French railway system in the Pays de la Loire area of German-occupied France, and thereby render it unusable by the Germans to move men, weapons and supplies from the south-western areas of German-occupied France to the 'Neptune' (iii) beach-head and 'Overlord' lodgement in Normandy (5 June 1944 onward).