Operation Harling
Operation Harling, known as the Battle of Gorgopotamos () in Greece, was a World War II mission by the British Special Operations Executive (SOE), in cooperation with the Greek Resistance groups EDES and ELAS, which destroyed the heavily guarded Gorgopotamos viaduct in Central Greece on 25 November 1942. This was one of the first major sabotage acts in Axis-occupied Europe, and the beginning of a permanent British involvement with the Greek Resistance.