Complete the following sentence: In Italy, the Allies suffered a long stalemate at the German Gustav Line. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️
Operation Diadem, the fourth and final Battle of Monte Cassino.<unk> Operation Diadem, the fourth and final Battle of Monte Cassino. "Here the Goums more than proved their value as light, highly mobile mountain troops who could penetrate the most vertical terrain in fighting order and with a minimum of logistical requirements. Most military analysts consider the Goumiers' maneuver as the critical victory that finally opened the way to the Italian capital of Rome.<unk> Most military analysts consider the Goumiers' maneuver as the critical victory that finally opened the way to the Italian capital of Rome.