Within ten years, the first great transformations on a national and international level took place: in 1930 the World Cup came into being; the one-round Italian Championship, was launched; the door was opened for future professionalism, granting the footballers reimbursement for their expenses for the first time.

This important change was made possible by a new Federation, led with great prestige by Leandro Arpinati, directly appointed to the top position in Italian football by the Italian Olympic Games Committee.

Thirteen years later (1933), Arpinati left the place to Giorgio Vaccaro, who will pass into history as the most successful president of Italy's football history.

In that period, under his management, the National Team won two world titles (1934-1938) and triumphed in Berlin in 1936, winning the gold medal at the Olympics.

During the sinister noise of the Second World War bombs, even
football had to stop, and once more war swept everything away, and drammatically interrupted the air of enthusiasm and joy that
was growing.