ROME--Fifty-three years ago, just as World War II was drawing to a close, 335 Italians were rounded up and shot during a Nazi reprisal to a bombing that left 33 SS officers dead. The victims--among them 75 Jews plucked from jail at the last minute--were forced into a kneeling position and shot with one bullet in the back of the head, their bodies rolled into natural caves on the outskirts of Rome, the Fosse Ardeatine.