to be correct. The Germans had built up enormous reserves of ball bearings and were receiving supplies from all over Europe, particularly Italy, Sweden and Switzerland. The operation against these industries would, even if successful, have achieved little. By 1945, the Germans had assembled more reserves than ever. Background Factories in and around Schweinfurt accounted for a significant amount of German ball bearing production. The Kugelfischer plant produced 22 percent, the Vereinigte Kugellagerfabriken I and II produced 20 percent, and another one percent came from the Fichtel & Sachs factory. After the German ball bearing "bottleneck" had been identified in 1942 and ball bearings had been named the second-most-vital Pointblank industry for the Combined Bomber Offensive in March 1943, Schweinfurt's ball bearing plants were selected for a second air raid after being bombed during the August Schweinfurt–Regensburg mission. Mission Each of the three bomber wings was to be escorted by fighters from a single group with multiple squadrons of P-47 Thunderbolts. The fighters were inexplicably not employing drop tanks which limited their escort range. One fighter outfit was sidetracked to escort a squadron of 29 B-24s that switched to a diversion mission to Emden because of the bad weather forecast. Some 229 of 291 B-17s hit the city area and ball bearing plants at Schweinfurt in two groups: the first group bombed at 1439–1445 hours, the second group at 1451–1457 hours. They claimed 186 Luftwaffe aircraft. 60 B-17s were lost, two damaged beyond repair and 13 damaged; casualties amounted to five KIA, 40 WIA and 594 MIA. The bomber formations were spread out and vulnerable because of bad weather. The Luftwaffe military intelligence officers had suspected a deep penetration air raid because of the substantial raids. Jagdgeschwader 3 Udet fighter wing intercepted the bombers as they crossed the coast but P-47s succeeded in shooting down seven Bf 109s while losing just one P-47. However one P-47 was also lost when it crashed at Herongate and another during a one-wheel landing on base. Over the Netherlands elements of two more "named" Luftwaffe fighter wings, JG 1 Oesau and JG 26 Schlageter made repeated attacks. The 305th Bomb Group lost 13 of its 16 B-17s in minutes. The B-17s were attacked after bombing by fighters that had refueled and rearmed (JG 11 downed 18 B-17s). A total of 13 bombers were shot down by German fighters and flak and 12 bombers were