their supply lines remained open. On the northern front, the Israelis also attacked Port Said, facing Egyptian troops and a 900-strong Tunisian unit, who fought a defensive battle. The Egyptian government claimed that the city was repeatedly bombed by Israeli jets, and that hundreds of civilians were killed or wounded. Adan and Magen moved south, decisively defeating the Egyptians in a series of engagements, though they often encountered determined Egyptian resistance, and both sides suffered heavy casualties. Adan advanced towards the Sweetwater Canal area, planning to break out into the surrounding desert and hit the Geneifa Hills, where many SAM sites were located. Adan's three armored brigades fanned out, with one advancing through the Geneifa Hills, another along a parallel road south of them, and the third advancing towards Mina. Adan's brigades met resistance from dug-in Egyptian forces in the Sweetwater Canal area's greenbelt. Adan's other brigades were also held by a line of Egyptian military camps and installations. Adan was also harassed by the Egyptian Air Force. The Israelis slowly advanced, bypassing Egyptian positions whenever possible. After being denied air support due to the presence of two SAM batteries that had been brought forward, Adan sent two brigades to attack them. The brigades slipped past the dug-in Egyptian infantry, moving out from the greenbelt for more than , and fought off multiple Egyptian counterattacks. From a distance of , they shelled and destroyed the SAMs, allowing the IAF to provide Adan with close air support. Adan's troops advanced through the greenbelt and fought their way to the Geneifa Hills, clashing with scattered Egyptian, Kuwaiti and Palestinian troops. The Israelis clashed with an Egyptian armored unit at Mitzeneft and destroyed multiple SAM sites. Adan also captured Fayid Airport, which was subsequently prepared by Israeli crews to serve as a supply base and to fly out wounded soldiers. west of the Bitter Lake, Colonel Natke Nir's brigade overran an Egyptian artillery brigade that had been participating in the shelling of the Israeli bridgehead. Scores of Egyptian artillerymen were killed and many more taken prisoner. Two Israeli soldiers were also killed, including the son of General Moshe Gidron. Meanwhile, Magen's division moved west and then south, covering Adan's flank and eventually moving south of Suez City to the Gulf of Suez. The ceasefire and further battles The United Nations Security Council passed (14–0) Resolution 338 calling for a ceasefire, largely negotiated between