All strength are Present for Duty (from OR 2:309). Artillery strengths are calculated on a ratio of 18.4 men per gun (average for the Army of the Potomac). Cavalry strength is calculated on a ratio of 60 men per company (as E, 2nd U.S. cavalry, listed in OR 2:309).

Individual values are:

• Staff: My assessments (when strength not reported) are 6 men for each division and 3 men for each brigade. Department 19 men (report), Tyler 6 + 3 x 3 = 15 men; Hunter 6 + 2 x 3 = 12 men; Heintzelman 6 + 3 x 3 = 15 men; Miles 6 + 2 x 3 = 12 men; aggregate 73 men.
• Tyler: aggregate present 9,936 x 95% (army average) = 9,440 men; staff 15 men; artillery 11 x 18.4 = 202 men; infantry 9,440 - 15 - 202 = 9,223 men.
• Hunter: pfd 2,485 + 3,634 (Burnside) + 60 (E, 2nd U.S. cavalry) = 6,179 men; staff 12 men; artillery 14 x 18.4 = 258 men; cavalry 7 x 60 = 420 men; infantry 6,179 - 12 - 420 - 258 = 5,489 men.
• Heintzelman: pfd 9,062 men; staff 15 men; artillery 10 x 18.4 = 184 men; infantry 9,062 - 15 - 184 = 8,863 men.
• Richardson: pfd 12,795 - 9,440 = 3,355 men; staff 3 men; artillery 6 x 18.4 = 110 men; infantry 3,355 - 3 - 110 = 3,242 men.
• Miles: pfd 6,173 men; staff 12 men; artillery 14 x 18.4 = 258 men; infantry 6,173 - 12 - 258 = 5,903 men.

All strength are Present for Duty.

ARMY OF SHENANDOHA

From the report in OR 2:487, initial forces (1st, 2nd and 3rd brigades) were 6,000 men "ready for action on the field." As a rule for any Confederate report that does not explicitly say the contrary, I assumed that this number does not include officers (nor staff, calculated below with the Army of the Potomac) and so I added other 368 men (6.14% average for the Army of the Potomac), aggregate Pfd 6,368 men. I assumed that this number includes cavalry and artillery. Cavalry is 300 (as per OR 2:483) plus 18 officers (6.14%), aggregate Pfd 318. Artillery is 18.4 men per gun (average for the Army of the Potomac), aggregate Pfd 370 men (74 men per each battery). Aggregate Pfd infantry is 6,368 - 370 - 318 = 5,680 men, equally divided amongst brigades according to the number of companies (93 in total).

Individual values are:

• Jackson: infantry 5,680 x 50/93 = 3,054 men. Artillery 2 x 74 = 148 men. Aggregate 3,202 men.
• Bartow: infantry 5,680 x 20/93 = 1,221 men. Artillery 74 men. Aggregate 1,295 men.
• Bee: infantry 5,680 * 23/93 = 1,405 men. Artillery 74 men. Aggregate 1,479 men.
• Smith: 2,334 men, including 6th N.C. but excluding 13th Va. and the artillery battery (the report makes clear that all the 20 guns were on the field at battle start) + 143 officers (6.14%) = 2,477 men. Artillery 74 men. Aggregate 2,551 men.
• Unattached, Army of the Shenandoha (engaged): cavalry 318 men.
• Unattached, Army of the Shenandoha (not engaged): infantry (13th Va.) 550 men + 34 officers (6.14%) = 584 men.

Values are from the two tables in OR 2:568 (all units, and engaged units). For the Washington Artillery (220 men): Early's detachment had 61 men, so other three detachments had 159 men (220 - 61) with 8 (4 + 2 + 2) guns, calculated in three units of 79, 40 and 40 men. For cavalry: 30th Va. had 676 men, detachments had 4 x 2 + 2 x 1 companies, calculated here in 4 x 135 men + 2 x 68 men. Ten unattached companies had 583 men, detachments had 6 + 4 companies, calculated here in 350 + 233 men.

Individual values are:

• Staff: My assessments (when strength not reported) are 12 men for each army (corps level) and 3 men for each brigade. Army of the Shenandoha: 12 + 4 x 3 = 24 men; Army of the Potomac: 12 + 22 (reports) = 34 men; Holmes 3 men; aggregate 61 men.
• Bonham, engaged: infantry 1,527 men; cavalry 135 + 350 = 485 men; artillery 80 men; aggregate 2,092 men.
• Bonham, unengaged: infantry 4,281 - 1,527 = 2,754 men; artillery 85 men; aggregate 2,839 men.
• Ewell: infantry 2,440 men; cavalry 209 men; artillery 79 men; aggregate 2,728 men.
• Jones: infantry 2,117 men; cavalry 68 men; artillery 40 men; aggregate 2,225 men.
• Longstreet: infantry 2,524 men x 37/40 (deducting detachment 1st Va.) + 447 men (six companies of 24th Va. from Sixth brigade, see) = 2,782 men; cavalry 68 men; artillery 40 men; aggregate 2,890 men.
• Cooke: infantry 3,273 men x 40/44 (deducting 1st La. btn.) + 2,524 x 3/40 (1st Va.) = 3,164 men; cavalry 135 men; artillery 74 men (half of Latham's and Loudon); aggregate 3,373 men.
• Early: infantry engaged 1,772 x 20/30 (deducting 4th S.C.) + 817 (7th La., incorrectly listed as "Seventh Brigade") = 1,998 men; artillery 61 men; aggregate 2,059 men. The strength of 24th Va. is: 2,517 men (the number of 261 officers being apparently a typo for 161) - 1,772 = 745 men; 6/10 (447 men) with Fourth Brigade and 4/10 (198 men) unattached.
• Evans: infantry 1,772 x 10/30 (4th S.C.) + 3,273 x 4/44 (1st La. btn.) = 889 men; cavalry 135 men; artillery 74 men (half of Latham's and Loudon); aggregate 1,098 men.
• Holmes: infantry 1,265 "bayonets" (OR 2:487) + 78 officers (6.14%) = 1,343 men; cavalry 90 men (OR 2:487) + 5 officers (in parallel as infantry) = 95 men; artillery 110 men (army average for six guns); aggregate 1,548 men.
• Unattached, Army of the Potomac (engaged): 8th La. 508 men; Hampton's Legion 627 men (as per second table, the 27 officers having apparently been counted twice in the first); aggregate 1,135 men.
• Unattached, Army of the Potomac (not engaged): infantry 8th La. 338 men (846 men incorrectly listed as "Eigth Brigade" - 508); 24th Va. 198 men; aggregate infantry 536 men; cavalry 135 + 233 = 368 men; artillery 293 men; aggregate 1,197 men.