bomber raid over command first bombed cologne buildings centre 1000 raf 1942 may rhine collapsed cathedral bridge river
cologne 1942 raid plane ww2 may bombers 1000 thousand british lancaster
cologne dom cathedral operation 1942 millenium koln coh2 germany bombing kölner shells hundreds der took but koelner
air blitz raid raids german london sirens bomber wailed luftwaffe 56pm 1940 launched force september
cologne ww2 war allied history flak bombers faced literally lot