The club found it difficult to adjust to the Second Division and were nearly further relegated in the 1937–38 season, when they were spared on goal averages. However, when World War II broke in 1939, Newcastle had a chance to regroup, and in the War period, they brought in Jackie Milburn, Tommy Walker and Bobby Cowell. They were finally promoted back to the First Division at the end of the 1947–48 season. During the 1950s, Newcastle won the FA Cup trophy on three occasions within a five-year period, beating Blackpool in 1951, Arsenal in 1952, and Manchester City in 1955. However, after this last FA Cup victory the club fell back into decline and were relegated to the Second Division once again at the end of the 1960–61 season under the management of Charlie Mitten. Mitten left after one season in the Second Division and was replaced by former player Joe Harvey. Newcastle returned to the First Division at the end of the 1964–65 season after winning the Second Division title. Under Harvey, the club qualified for European competition for the first time after a good run in the 1967–68 season and the following year won the 1969 Inter-Cities Fairs Cup Final, triumphing 6–2 over two legs against Hungary's Újpest in the final.