Confederate Army soldier numbers are impossible to completely calculate. Large numbers of men were enlisted, conscripted, etc. Large numbers were discharged for disability, close of an enlistment, deserted or died in service, etc. before the close of the conflict. Consequently it is unknown how many men, total, served in the Confederate States military, or the State troops, militia, home guards, or informal partisan/guerrilla corps all told. Nor is it known how many lost their lives before the close of the war.
There are estimates based on compilations from surviving records. John M. Sacher basically observed of the subject...
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Winner of the Jules and Frances Landry AwardFinalist for the 2022 Gilder Lehrman Lincoln PrizeIn April 1862, the Confederacy faced a dire military situation. Its forces were badly outnumbered, the Union army was threatening on all sides, and the twelve-month enlistment period for original...
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The number of men who served in the Confederate Army has been best estimated by its strength, which, like the Union army's, varied over time; from about ca. 350,000 in January, 1862, to a peak strength on the rolls of about 473,000 in July, 1863, but with only ca. 307,464 "aggregate present." Absenteeism was always a significant problem. A year later in mid-1864:
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Jeff Davis reported publicly in Sept. 1864 that a
majority of the men on the rolls were absent from the ranks in his speech at Palmetto, Georgia. And in 1869, former Confederate Adjutant General Samuel Cooper, could only state that about half of the men on the rolls were present for duty at any given point in the last two years of the war. These monthly returns for the total force were kept secret, and do not appear to have survived the war.
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The monthly strength compilations of Army wide data evidently did not survive the war, and were not included in the published official records of the armies according to Col. Livermore...
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So in the Official Records, the Confederate Army strength is estimated by compilations from the US War Department, post war, of various Confederate field returns from the armies, etc. found in the captured Confederate records. In other words, general estimates so far as surviving data might be employed to estimate the total force's condition, lacking the exact returns which Gen. Cooper mentioned, these are the best that can be compiled apparently. Examples:
The calculation based on various Confederate data for Confederate total strength in the spring of 1865:
The last returns for the Confederate army in 1865 suggested circa 120,000 men present. Some, like the authors of "Why the South Lost..." (1991) p. 144, have questioned this low number, because the Union Army paroled over 174,000 shortly afterwards at the close of the war...
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But the discrepancy is easily explained.
At the close of the war, the United States forces cared nothing about the service status of Confederates surrendering to receive parole, many of whom had been absent from their commands for a period of time. For example, Gen. N.B. Forrest commanded all of his troops, present or absent, to surrender to US forces at the first opportunity, wherever they were, to receive parole.
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Lastly, some of the Confederates surrendered and paroled by the US Army, were not members on the rolls of the Confederate army or counted as such by the Confederate Army, but home guards, State troops, etc. who surrendered to US forces too.
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There were also cases of men already discharged from the Confederate Army who chose, at the close of the war, to surrender to US forces and receive parole, for their own purposes.
Thus the number of paroles given by the US Army in mid-1865 apparently exceeded the number of effective men of the Confederate Army ranks prior to the surrender...
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Anyways, a general estimate of about a million men who at one time or another were in the Confederate Army, Navy, Marine corps, militia, local or State troops, etc. has been considered about accurate. Thomas Speed noted in 1904:
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About the same time, Gen. G.P. Thruston, USA, estimating about 400,000 Confederate dead, and with another 400,000 veterans living in 1890, adding the common mortality calculations of veterans between 1865-1890, would suggest about a million total...
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...
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With reports of meetings of the societies of the Army of the Cumberland; the Army of the Tennessee; the Army of the Ohio; and the Army of Georgia.
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But Southern authors by 1900 were often loath to admit more than 600,000 Confederate soldiers. For the most part, like compiler Randolph McKim, they were merely regarding men who did actual front-line combat service in the main field armies, and excluding what many Southerners called "bomb-proofs" or "buttermilk rangers", viz. men ostensibly in the CS Army who saw no action, and were never near the front lines, but hunting conscripts, acting on industrial or agricultural details, enforcing martial law, etc.
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The US War Department, which possessed and compiled the surviving records of the Confederate Army, never did produce an estimate of the exact number of men who served in some capacity in the Confederate Army, as the surviving records were too incomplete.
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Confederate Deaths.
The loss of an enormous quantity of Confederate Army records in the fall of Richmond in 1865, etc., ensures that no accurate
complete calculation of Confederate military deaths can be compiled. Nor could the complete number of dead among Confederates serving in State troops, Militia in State service, or home guard or partisan/guerrilla corps exterior to Confederate States service be compiled. Calculated estimations from the surviving records, and the record so far as reported by commanders in the field, the number of deaths among the Confederate Army is generally estimated to be at least about 250,000, or up to 300,000.
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One review of the surviving fragmentary Confederate army rolls in the federal government's "rebel archives" by US Provost marshal General Fry found record of at least 135,821 deaths. (from Labree, Ben,
Confederate Soldier in the Civil War, Prentis Press, Louisville, KY, 1897, p. 380):
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But as noted, that number is a significant undercount, given a lack of complete record for many soldiers and units. The same work (p. 376) noted...
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A "muster out roll" would have been a final muster roll for each Confederate unit, which would have listed a FINAL disposition for each soldier of every Confederate unit, from which, in total, the full number of men who served, who died or were missing in action, etc. would have been discernable. The Confederate army instead disintegrated before anything like that was compiled.
Consequently, Gen. Marcus J. Wright CSA observed:
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Even the Confederate Army's reported battle losses, for another example, regarding battle deaths in the wartime reports of army commanders of casualties are only "So far as reported" numbers rather than confirmed by the Confederate Adjutant General's review of regimental rolls, etc. (many of which were lost/destroyed in 1865). For example Lee's HQ reported to Richmond, so far as reported to it, in the aftermath of Gettysburg (mind while the army was yet in the field opposing a large enemy force) losses in the battle of about 2,000 killed, etc. The US forces at Gettysburg reported Confederate burials on or about the field after Lee's retreat as no less than 7,000, including post-battle deaths in field hospitals about the battlefield. Historians generally quote the official report, which is accurate (there being
at least 2,000 killed), but undercounts
significantly. To date the research of the Busey's on Confederate casualties at Gettysburg to the present have identified by name from a multitude of sources about 6,500 of Lee's dead there.
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Similarly, Gen. Hood reported after the Battles of Atlanta, his army suffering ca. 5,000 casualties. Just before the close of the war, Gen. Hardee, who commanded one of that army's corps, noted his corps alone suffered more casualties than that, and the other two about likewise.
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The number of total Confederate military deaths, or at least the deaths among military aged white men in the Confederacy, is likely much higher than generally estimated. Demographers of late, employing statistical models rendered by calculations of census data of 1860 and 1870 show an excess population loss in the South, which they present ca. 3 to 400,000.
Considering that the military forces of the Union employed nearly 3 million men, and the Confederacy perhaps a million, the odds were certainly daunting. As a Confederate veteran put it...
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But the difference in numbers did not translate necessarily to overwhelming battlefield numbers by the Union forces in every case. The Union forces employed large parts of their effective present personnel to logistical functions, guard duty, occupation duty, patrolling, etc. outside the ranks of the fighting forces.
A significant "force multiplier" for the Confederacy which allowed for such significant resistance to the vastly larger Union military forces was the population of slaves. The Confederacy employed hundreds of thousands of slave laborers in logistic functions for the Confederate military, from hospital attendants, to quartermaster's department laborers, teamsters, hostlers, and general labor on fortifications. The total numbers are unknown.
From Conrad Wise Chapman's painting of Battery Marshall, at Charleston, in 1863:
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At nearby Fort Sumter, after each day's bombardment by the blockaders, a corps of slave laborers worked overnight to repair the fortifications, etc.
For example, it was estimated that Lee's Army in Pennsylvania in 1863 was accompanied by circa 20,000 negroes, principally slaves, acting as non-combatant teamsters, hostlers, camp cooks, etc. Besides the large number with the wagon trains, each regiment on the march was described as having a large squad, sometimes as large as another company, of slaves tramping in its rear. [see, Guelzo,
Gettysburg: The Last Invasion, (2014), p. 161.]
This sometimes served too, to confound Union generals as to Confederate strength, as on the Peninsula in 1862 where thousands of slaves aided in the rapid erection of Gen. Magruder's defensive fortifications, etc. in front of McClellan's advancing army.
See Martinez, "Confederate Slave Impressment in the Upper South" (2013) for a regional assessment.
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Because they were slaves, the United States and the Confederacy did not consider negroes employed by the Confederate army as combatants. However, after the war, some Southern States acted to recognize for Confederate service pensions any former slave who had rendered service or labor directly under a Confederate officer in some capacity.