aircraft lost by the Egyptians is disputed. Among the Egyptian planes lost were all 30 Tu-16 bombers, 27 out of 40 Il-28 bombers, 12 Su-7 fighter-bombers, over 90 MiG-21s, 20 MiG-19s, 25 MiG-17 fighters, and around 32 assorted transport planes and helicopters. In addition, Egyptian radars and SAM missiles were also attacked and destroyed. The Israelis lost 19 planes, including two destroyed in air-to-air combat and 13 downed by anti-aircraft artillery. One Israeli plane, which was damaged and unable to break radio silence, was shot down by Israeli Hawk missiles after it strayed over the Negev Nuclear Research Center. Another was destroyed by an exploding Egyptian bomber. The attack guaranteed Israeli air supremacy for the rest of the war. Attacks on other Arab air forces by Israel took place later in the day as hostilities broke out on other fronts. The large numbers of Arab aircraft claimed destroyed by Israel on that day were at first regarded as "greatly exaggerated" by the Western press. However, the fact that the Egyptian Air Force, along with other Arab air forces attacked by Israel, made practically no appearance for the remaining days of the conflict proved that the numbers were most likely authentic. Throughout the war, Israeli aircraft continued strafing Arab airfield runways to prevent their return to usability. Meanwhile, Egyptian state-run radio had reported an Egyptian victory, falsely claiming that 70 Israeli planes had been downed on the first day of fighting. Gaza Strip and Sinai Peninsula The Egyptian forces consisted of seven divisions: four armoured, two infantry, and one mechanized infantry. Overall, Egypt had around 100,000 troops and 900–950 tanks in the Sinai, backed by 1,100 APCs and 1,000 artillery pieces. This arrangement was thought to be based on the Soviet doctrine, where mobile armour units at strategic depth provide a dynamic defense while infantry units engage in defensive battles. Israeli forces concentrated on the border with Egypt included six armoured brigades, one infantry brigade, one mechanized infantry brigade, three paratrooper brigades, giving a total of around 70,000 men and 700 tanks, who were organized in three armoured divisions. They had massed on the border the night before the war, camouflaging themselves and observing radio silence before being ordered to advance. The Israeli plan was to surprise the Egyptian forces in both timing (the attack exactly coinciding with the IAF strike on Egyptian airfields), location (attacking via northern and central Sinai