Here is a brief translation of the BOYS San history from their website -
The Origins
It was the famous Helenio Herrera who introduced the concept of organised fan groups in Milan: Small groups like "Moschettieri" and then "Aficionados" were the first but then in the late 60's the BOYS were born from some members of the Inter Club Fossati, creating the first Ultras group that belonged to F.C Inter.
The 1970's
During the 70's period of the Ultras boom, the Boys to be an invaluable support, which went to see nearly all of their away games defending their colours and thier banners with honour. It was in these years that the first tensions with the rivals came. Biggest rivals of the times were Atalanta, Torino, Fiorentina and more than all - Milan. It was the rivalry with the last team that was most active with regular invasions into the Curva Sud or from them into the Curva Nord.
The 1980's
The 80's realised the years of the most splendour from the BOYS. At the beginning of the decade , the letters S.A.N (Squadra d'Azione Nerazzurre) came into the banners to spell BOYS S.A.N. Then after arguments between directors the group "Potere Nerazzurro" disappeared, while the group "Forever Ultras" born in 1975 grows. Violence spreads inside the stadium, very famous are the fights on the 22-11-81 in the San Siro against the Romans, or fights the very next year in Genoa. The summit though comes against our Rossoneri cousins. On the choreography side the first flares appear in 1985. Important "partnerships" are made with the ultras of Verona (finished in 2001), Fiorentina (finished in 1987) and Sampdoria (finished in 1992). In the last part of this great decade, a great innovation: a beautiful banner is inserted in the middle of Curva Nord, just like today.
The 1990's
The 90's begin with Inter first UEFA Cup win at the expense of Roma. In the same year, Sampdoria win the Scudetto in the match against us at the San Siro, the partnership immediately ends. If the 80's was all about the violence in the stands, then the 90's was about the choreography aspect. The first years of the decade are years of transition which bought good but not excellent results. Also was the wave of more enemy groups, the fact that we were successful and that so many groups of the Nord were united contributed to that.
Our current days
In 2001 the partnership with Verona is ended because of arguments with the new and arrogant leader of their Ultras. But we, the BOYS SAN MILANO will always be there to honour our great shirt...