Answer
No, Vittorio De Sica did not win the Oscar for Best Supporting Actor for A Farewell to Arms. Although he received a nomination for his role in the 1932 film, the award ultimately went to another actor. De Sica, an Italian director, screenwriter, and actor, gained recognition for his significant contributions to Italian neorealist cinema, where he directed critically acclaimed films such as Bicycle Thieves and Umberto D.