The Beretta first can be seen in the Bizerte Canal level where a few german officers and italian soldiers are using it. Klaus Knefler uses one as his preffered sidearm. In multiplayer it is the default sidearm for the italian soldiers. The Beretta has low damage and it's even worse at longer ranges, but it has the highest magazine capacity of the pistols with 15 rounds.
Beretta M1934 in Medal of Honor: Allied Assault: Breakthrough.