Dee ihe na-aga n'ihu maka paragraf a - N'afọ 1942, ndị agha ahụ bidoro iji ụgbọ elu dị ogologo na-anọchi F-2s, gụnyere Lockheed A-29 Hudson, na obere oge ụfọdụ Douglas F-3 Havocs. Ojiji nke ụgbọelu ndị a gụnyere ntinye na 1942 na 1943 iji rụọ ọrụ nkewa na South America iji kwado ọrụ zuru ụwa ọnụ nke 1st Group. N'ọnwa Jenụwarị afọ 1944, ndị agha ahụ kwagara Peterson Field, Colorado, ebe ha sonyeere isi ụlọ ọrụ 1st Group, nke kwagara ebe ahụ n'ọnwa gara aga. Na Colorado, ụgbọelu ahụ gbanwere ka ọ bụrụ Liberators, na-efe efe ma F-7 reconnaissance na B-24 ụdị bọmbụ dị arọ nke ụgbọelu ahụ. Site na June ruo September 1944, ndị agha ahụ na-efe ogologo oge n'elu agwaetiti Kuril nke Japan na North Pacific. Ya na Boeing B-29 Superfortress wakporo ụlọ ọrụ Iron and Steel nke Yawata
N'otu ọnwa ahụ, ndị a bụ ụfọdụ n'ime ụgbọelu ndị mbụ gafere Japan kemgbe Doolittle Raid nke April 1942.