Dee ihe na-esote paragraf a - N'abalị iri abụọ na anọ n'ọnwa Julaị n'afọ 1943, ụbọchị ole na ole ka agha Ruhr bisịrị, Harris nyere iwu ka e bido "Operation Gomorrah"
, mwakpo a wakporo Hamburg. Ebumnuche ya bụ imebi ma ọ bụ ịkwụsị mmepụta ụgbọ mmiri U-boat n'obodo ọdụ ụgbọ mmiri ahụ. Mwepụta nke "Window" gbawara oghere na mkpuchi radar German na iyi bọmbụ, nke OBOE na H2S radar nyeere aka, nwere ike ịbanye na nchebe iji bibie etiti obodo ahụ. Usoro "Himmelbett" (ihe ndina elu ụlọ) nke ndị na-alụ ọgụ abalị na-achịkwa radar na-abanye n'ime mmiri nke bọmbụ ma jirizie radar nke ya họrọ ma tinye bọmbụ ndị ọ bụla. Mmetụta nke mwakpo ahụ, na ịghọta na radar ndị Germany kpuru ìsì nwa oge, dugara n'iji usoro Wild Boar (Wilde Sau) eme ihe n'oge ọkọchị, 1943. Bomber Command meghachiri omume na arụmọrụ Wild Boar site na ibelata oge ndị na-atụ bọmbụ na-etinye n'elu obodo, iji Mandrel na "spoof" ma ọ bụ ngagharị iwe. Mgbasawanye nke ọrụ "Window" kpuchiri radar ma hapụ ndị agha German nwere otu oche na injin na-enweghị nduzi ọ bụla ruo oge ụfọdụ. NJG 2 enweghị ike ịkwatu ụgbọelu RAF ọ bụla. Ndị na-anya ụgbọelu na-alụ ọgụ n'abalị kwuru na ndị na-atụ bọmbụ iri na abụọ; itoolu site n'aka NJG 3 na atọ site n'aka NJG 1.