Israel eventually decided not to allow them to return, and offered them financial compensation, which they refused to accept. At the end of the month, the IDF had captured the whole of Galilee, driven all ALA forces out of Israel, and had advanced into Lebanon to the Litani River, occupying thirteen Lebanese villages. In the village of Hula, two Israeli officers killed between 35 and 58 prisoners as retaliation for the Haifa Oil Refinery massacre. Both officers were later put on trial for their actions. Israel launched a series of military operations to drive out the Arab armies and secure the borders of Israel. However, invading the West Bank might have brought into the borders of the expanding State of Israel a massive Arab population it could not absorb. The Negev desert was an empty space for expansion, so the main war effort shifted to Negev from early October. Israel decided to destroy or at least drive out the Egyptian expeditionary force since the Egyptian front lines were too vulnerable as permanent borders. On 15 October, the IDF launched Operation Yoav in the northern Negev. Its goal was to drive a wedge between the Egyptian forces along the coast and the Beersheba-Hebron-Jerusalem road and ultimately to conquer the whole Negev. This was a special concern on the Israeli part because of a British diplomatic campaign to have the entire Negev handed over to Egypt and Jordan, and which thus made Ben-Gurion anxious to have Israeli forces in control of the Negev as soon as possible. Operation Yoav was headed by the Southern Front commander Yigal Allon. Committed to Yoav were three infantry and one armoured brigades, who were given the task of breaking through the Egyptian lines. The Egyptian positions were badly weakened by the lack of a defense in depth, which meant that once the IDF had broken through the Egyptian lines, there was little to stop them. The operation was a huge success, shattering the Egyptian ranks and forcing the Egyptian Army from the northern Negev, Beersheba and Ashdod. In the so-called "Faluja Pocket", an encircled Egyptian force was able to hold out for four months until the 1949 Armistice Agreements, when the village was peacefully transferred to Israel and the Egyptian troops left. Four warships of the Israeli Navy provided support by bombarding Egyptian shore installations in the Ashkelon area, and preventing the Egyptian Navy from evacuating retreating Egyptian troops by sea. On 19 October, Operation Ha-Har commenced in the Jerusalem Corridor, while a naval battle also took place near Majdal (now Ashkelon), with three Israeli corvettes facing an Egyptian corvette with air support.