Today in World War II History—November 18, 1940 & 1945

Map showing the Greek counteroffensive against the Italians, 13 Nov 1940-7 April 1941 (via Wikimedia Creative Commons)
80 Years Ago—Nov. 18, 1940: Greeks force Italians back into Albania in the first Axis land defeat of the war.
First time a U-boat is located by airborne radar—by an RAF Sunderland flying boat.

António de Oliveira Salazar, 1940 (public domain via Wikipedia)
75 Years Ago—Nov. 18, 1945: Gen. Dwight Eisenhower replaces Gen. George Marshall as US Army Chief of Staff.
Dictator António de Oliveira Salazar is reelected Prime Minister of Portugal.