WWII is an exception, because of the controversies surrounding the liberation in 1944. The latter was mostly achieved by Communist partisans entering the city, while in December, the British, together with the exiled government, right-wing guerillas and, most importantly, pro-German collaborators launched a brutal conflict that led to open civil war. Given these controversies and the fact that communists were imprisoned/expelled/executed for the next 30 years, the beginning of the war was chosen as a less inflammatory option.