In the absence of any other Italian film directors, Mr Infascelli bravely flew the flag for his country.
(often + for)
wave the flag
To stand up for, support, or defend someone or something. A number of people from the actor's hometown are arriving into New York to wave the flag at his debut performance on Broadway.My country is often a target for insults or gibes abroad, so whenever I go traveling I make a point of waving the flag for it.
fly/show/wave the ˈflag
show your support for your country, an organization or an idea in order to encourage or persuade others to do the same: This exhibition of Scottish painting is our way of flying the flag. ▶ ˈflag-waving noun the expression of strong national feelings, especially in a way that people disapprove of