 Complete the following phrase:  All club football in Greece was suspended from 1941 to 1945 due to the German occupation of the country. After the war period, the club was constantly competing with Aris for the Thessaloniki championship, which gave upon its winner the right to participate in the Greek championship. Iraklis participated in the 1947 Greek Cup final, where was defeated 50 by the domit Greek team of that era, Olympiacos. In the 1950s, the team solidified its position among the top teams in Greece along with Olympiacos, AEK Athens, Panathinaikos, Aris and PAOK. Nevertheless, the club struggled with ficial difficulties in an ailing Greek economy. Thessaloniki where many refugees from the 