sentences:  The 8th U.S. Air Force was to bomb the fortifications around Eschweiler and Aldenhoven, while the medium bombers of the 9th Air Force were assigned to the second line of defense around Jülich and Langerwehe.At the same time, the RAF Bomber Command was to hit the traffic centres of Jülich and Düren hard; the smaller towns of Heinsberg, Erkelenz and Hückelhoven were designated as secondary targets.Initially, the starting date of the offensive was set for 5 November, later 10 November, but because of bad weather it was delayed until 16 November.