Appendix A: U.S. Army and Army Engineer Personnel Strength in Overseas Theaters, 1 January 1942–1 October 1945*
| Year and Month | Panama–Alaska–Western Canada | Central Pacific | South Pacific | Southwest Pacific | China–Burma–India |
| 1942 January | 62,422 | 50,708 | 0† | 4,600‡ | 0 |
| 2,988 | 2,856 | 0 | 0 | 0 | |
| April | 85,151 | 71,029 | 22,961 | 31,647 | 100 |
| 7,194 | 4,805 | 2,466 | 3,319 | 0 | |
| July | 118,192 | 111,437 | 52,455 | 88,313 | 7,474 |
| 19,433 | 5,779 | 2,745 | 7,728 | 14 | |
| October | 150,491 | 135,810 | 65,081 | 104,113 | 13,361 |
| 22,309 | 6,744 | 3,475 | 7,684 | 1,986 | |
| 1943 January | 175,852 | 131,157 | 109,979 | 106,663 | 16,988 |
| 26,767 | 7,165 | 8,770 | 7,549 | 1,996 | |
| April | 184,238 | 128,441 | 125,960 | 135,108 | 29,026 |
| 25,640 | 8,550 | 11,745 | 18,515 | 3,546 | |
| July | 199,987 | 146,305 | 145,443 | 176,254 | 33,406 |
| 25,719 | 10,203 | 13,434 | 23,909 | 3,541 | |
| October | 196,038 | 171,319 | 162,323 | 239,525 | 60,246 |
| 19,802 | 11,298 | 13,815 | 31,153 | 8,6G9 | |
| 1944 January | 188,581 | 197,404 | 192,302 | 307,141 | 94,560 |
| 18,085 | 16,286 | 15,261 | 42,285 | 15,817 | |
| April | 150,346 | 227,877 | 244,769 | 390,535 | 134,493 |
| 16,662 | 20,448 | 19,527 | 61,167 | 19,249 | |
| July | 120,798 | 255,931 | 132,617 | 627,640 | 138,407 |
| 14,745 | 29,811 | 10,908 | 95,336 | 22,824 | |
| October | 108,232 | 412,618§ | 689,804 | 149,014 | |
| 10,949 | 46,714§ | 99,556 | 24,153 | ||
| 1945 January | 94,424 | 4-08,085§ | 744,373 | 180,405 | |
| 6,521 | 49,966§ | 104,130 | 29,955 | ||
| April | 77,999 | 433,370§ | 787,439 | 197,409 | |
| 5,122 | 55,353§ | 108,554 | 30,015 | ||
| July | 73,427 | 461,900§ | 866,214 | 194,558 | |
| 5,520 | 63,137§ | 115,642 | 29,249 | ||
| October | 70,767 | 1,552,303** | 181,338 | ||
| 4,442 | 253,421** | 27,047 | |||
* The top figure for each month indicates overall Army strength; the lower figure, Engineer strength. Figures are for the first of the month.
† Theaters for which the figure 0 is given may have had some U.S. Army and Engineer personnel, but if so, the number was too small to appear on War Department statistical tables.
‡ Personnel strengths of the U.S. Army and the Engineers in the Philippines on 1 January and l April 1942 are not included in the Southwest Pacific figures.
§ Combined figures for Central Pacific and South Pacific Theaters.
** Combined figures for Central Pacific, South Pacific, and Southwest Pacific Theaters.