| R.A.F. Bomber Command | U.S. 8th Air Force | |||||
| Sorties | Tonnage | Losses | Sorties | Tonnage | Losses | |
| 1939 | 333 | 31 | 41 | - | - | - |
| September | 123 | 6 | 17 | - | - | - |
| October | 32 | - | 4 | - | - | - |
| November | 19 | - | 1 | - | - | - |
| December | 159 | 25 | 19 | - | - | - |
| 1940 | 20,809 | 13,033 | 652 | - | - | - |
| January | 44 | 1 | 0 | - | - | - |
| February | 58 | 1 | 3 | - | - | - |
| March | 292 | 31 | 12 | - | - | - |
| April | 656 | 112 | 41 | - | - | - |
| May | 2,419 | 1,668 | 76 | - | - | - |
| June | 3,296 | 2,300 | 65 | - | - | - |
| July | 2,338 | 1,257 | 79 | - | - | - |
| August | 2,605 | 1,365 | 81 | - | - | - |
| September | 3,239 | 2,339 | 87 | - | - | - |
| October | 2,414 | 1,651 | 60 | - | - | - |
| November | 2,007 | 1,316 | 86 | - | - | - |
| December | 1,441 | 992 | 62 | - | - | - |
| 1941 | 30,608 | 31,704 | 1,272 | - | - | - |
| January | 1,126 | 777 | 27 | - | - | - |
| February | 1,741 | 1,431 | 52 | - | - | - |
| March | 1,890 | 1,744 | 75 | - | - | - |
| April | 2,925 | 2,396 | 98 | - | - | - |
| May | 2,689 | 2,846 | 76 | - | - | - |
| June | 3,759 | 4,310 | 116 | - | - | - |
| July | 3,825 | 4,384 | 188 | - | - | - |
| August | 3,812 | 4,242 | 206 | - | - | - |
| September | 2,884 | 2,889 | 153 | - | - | - |
| October | 2,639 | 2,984 | 126 | - | - | - |
| November | 1,756 | 1,907 | 104 | - | - | - |
| December | 1,562 | 1,794 | 51 | - | - | - |
| 1942 | 35,050 | 45,561 | 1,716 | 1,453 | 1561 | 42 |
| January | 2,240 | 2,292 | 88 | - | - | - |
| February | 1,414 | 1,011 | 48 | - | - | - |
| March | 2,355 | 2,675 | 101 | - | - | - |
| April | 3,998 | 4,433 | 174 | - | - | - |
| May | 2,807 | 3,234 | 136 | - | - | - |
| June | 4,997 | 6,845 | 241 | - | - | - |
| July | 4,227 | 6,368 | 212 | - | - | - |
| August | 2,640 | 4,162 | 173 | 114 | 151 | - |
| September | 3,616 | 5,595 | 214 | 183 | 188 | 2 |
| October | 2,604 | 3,809 | 130 | 284 | 278 | 10 |
| November | 2,194 | 2,423 | 87 | 519 | 604 | 13 |
| December | 1,958 | 2,714 | 112 | 353 | 340 | 17 |
| 1943 | 64,528 | 157,457 | 2,671 | 27,362 | 44,185 | 1,036 |
| January | 2,962 | 4,345 | 122 | 338 | 594 | 18 |
| February | 5,456 | 10,959 | 132 | 526 | 568 | 23 |
| March | 5,458 | 10,591 | 194 | 956 | 1,483 | 21 |
| April | 5,887 | 11,467 | 290 | 449 | 858 | 29 |
| May | 5,490 | 12,920 | 284 | 1,672 | 2,555 | 69 |
| June | 5,816 | 15,271 | 290 | 2,107 | 2,330 | 90 |
| July | 6,170 | 16,830 | 219 | 2,829 | 3,475 | 118 |
| August | 7,807 | 20,149 | 308 | 2,265 | 3,999 | 117 |
| September | 5,513 | 14,855 | 225 | 3,259 | 7,369 | 98 |
| October | 4,638 | 13,773 | 180 | 2,831 | 4,548 | 186 |
| November | 5,208 | 14,495 | 210 | 4,157 | 5,751 | 95 |
| December | 4,123 | 11,802 | 217 | 5,973 | 10,655 | 172 |
| 1944 | 157,448 | 525,518 | 2,932 | 210,544 | 379,119 | 3,497 |
| January | 6,278 | 18,428 | 352 | 6,367 | 10,532 | 203 |
| February | 4,308 | 12,054 | 223 | 9,884 | 16,480 | 271 |
| March | 9,049 | 27,698 | 322 | 11,590 | 19,892 | 345 |
| April | 9,883 | 33,496 | 239 | 14,464 | 22,447 | 420 |
| May | 11,369 | 37,252 | 303 | 19,825 | 32,450 | 376 |
| June | 15,963 | 57,267 | 335 | 28,925 | 54,204 | 320 |
| July | 17,798 | 57,615 | 274 | 23,917 | 40,784 | 352 |
| August | 20,284 | 65,855 | 244 | 22,967 | 44,120 | 331 |
| September | 16,071 | 52,587 | 152 | 18,268 | 36,332 | 374 |
| October | 16,906 | 61,204 | 153 | 19,082 | 28,961 | 177 |
| November | 14,644 | 53,022 | 173 | 17,003 | 36,091 | 209 |
| December | 14,895 | 49,040 | 162 | 18,252 | 36,826 | 119 |
| 1945 | 64,738 | 181,740 | 838 | 94,185 | 188,573 | 973 |
| January | 10,907 | 32,923 | 190 | 17,702 | 34,891 | 314 |
| February | 17,400 | 45,889 | 233 | 22,884 | 46,088 | 196 |
| March | 21,191 | 67,637 | 301 | 31,169 | 65,962 | 266 |
| April | 13,823 | 34,954 | 108 | 20,154 | 41,632 | 190 |
| May | 1,417 | 337 | 6 | 2,276 | - | 7 |
| TOTAL | 373,514 | 955,044 | 10,123 | 332,904 | 621,877 | 5,548 |
Source: I.C.B. Dear & M.R.D. Foot, The Oxford Companion to World War II.