When did Bayern Munich win their first competitive game under Barcelona's former manager?
2009–10 FC Bayern Munich season The 2009–10 season of Bayern Munich began on 1 July with their first training session, led by the team's new head coach Louis van Gaal. After several friendlies the first competitive game was a cup game on 1 August. The league started on 8 August.
1966 DFB-Pokal Final The 1966 DFB-Pokal Final decided the winner of the 1965–66 DFB-Pokal, the 23rd season of Germany's knockout football cup competition. It was played on 4 June 1966 at the Waldstadion in Frankfurt. Bayern Munich won the match 4–2 against Meidericher SV, to claim their 2nd cup title.