 Complete the following phrase:  Upon returning to Serie A after a 12-year absence, the Venezia squad was strengthened, with the arrival of players including Luigi Busidoni, Silvio Di Gennaro, Sergio Stefanini, and, most importantly, Valentino Mazzola. Mazzola was in Venice for military service, and after having showcased himself playing with military representatives in Campo dei Bacini, Venezia took him on trial and then bought him from Serie C club Alfa Romeo Milano. In the 