According to Sandy

Italian Neorealist director Roberto Rossellini, (1906-1977), made a series of films just after World War II labeled the “War Trilogy”. They have been issued in a DVD box set :
“Rome Open City, (1945)” “Paisan” (1946) and “Germany Year Zero” (1948)

Acclaimed by French directors François Truffaut and Jean-Luc Godard, their articles appeared in the film magazine “Cahiers du Cinema”,  declaring Rosselini “the father of the French New Wave”. His use of non-actors, his focus on little human interest stories and his use of the Italian street as back drop gave Rossellini ‘s films a grittiness and realism rarely seen in Europe before the war.

Roberto Rossellini’s “War Trilogy”