Kirchner received the order for "Fall Gelb" at 13:15, during lunch, on 9 May 1940. The German attack began at 5:35 on the morning of 10 May 1940. The XIX "Armeekorps" advanced without resistance through Luxemburg and reached the Belgian border at 10:00. The 1st and 2nd Panzer Division reached the line Menufontaine (south of Bastogne) – Fauvillers, the 10th Panzer Division the line Rulles (west of Habay) – St. Marie (west of Étalle), that evening. The advance breached the second Belgian line of defence at Bouillon and Neufchâteau on 11 May. The German forces, consisting of the 1st and 10th Panzer Division reached the area north of Sedan on the night of 12/13 May. The following day at 8:00 German Ju 87 Stukas and bombers from Luftflotte 3 (3rd Air Fleet) targeted the French and Belgian forces in what would become the Battle of Sedan. At 15:30 the German artillery began a 30-minute bombardment followed by an aerial attack. German troops began crossing the Meuse at 16:00 in rubber assault boats. The assault company of "Kradschützen-Bataillon I" (1st Motorcycle Infantry Battalion) under the command of Wend von Wietersheim established the first bridgehead north of Igles and west of Saint-Menges.