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Military


Civil War army Corps

The Army of the Potomac, also that of Virginia, was for convenience sake divided into corps, but such corps had no legal existence until after July, 1862. Section 9 of the act approved July 17, 1862, which reads as follows: "And be it further enacted, that the President be and he is hereby authorized, fco establish and organize Army Corps according to his discretion"-legalized and allowed the organization of troops into Army Corps, and under this authority the following corps were organized;

First Army Corps

  • August 12, 1862.-The troops of the Mountain Department were to constitute the First Corps, under command of Major-General Fremont. April 15, 1863.-Major-General John F. Reynolds assigned to command. March 23, 1864,-Discontinued, and troops transferred. November 28, 1804.-Reorganized under the command of Major-General Hancock.

    Second Army Corps

  • August 12, 1862.-The troops of the Shenandoah Department were to constitute the Second Corps, under command of General Banks.
  • September 12, 1862.-The President ordered that this corps should be known hereafter as the Eleventh, and that the corps arranged in General Order No. 101, of March 13, 1862, Headquarters Army of the Potomac, as the Second, should be known as such.
  • June 28, 1865.-Discontinued.

    Third Army Corps

  • August 12, 1862.-The troops under General McDowell, except those within thf city and fortifications of Washington, were to form this corps, and to be under his command.
  • September 12, 1862.-The President ordered that this corps should be known hereafter as the Twelfth; and that the corps arranged as the Third in General Orders No. 101, of March 13, 1862, Headquarters Army of the Potomac, should be known as such.
  • March 23, 1864.-Discontinued, and troops transferred.

    Fourth Army Corps

  • September 12, 1862.-The President directed that the corps arranged as the Fourth in General Orders No. 101, of March 13,1862, Headquarters of the Army of the Potomac, should be known as such.
  • August 1, 1863.-Discontinued, and the troops transferred to other corps.
  • September 28, 1863.-The Twentieth and Twenty-first Corps consolidated and constituted the Fourth Corps, under command of Major-General Gordon Granger.
  • August 1,1865.-Discontinued.

    Fifth Army Corps

  • July 22, 1862.-The President directed that the corps arranged in G. O. No. 125, Headquarters Army of the Potomac, of the forces commanded by BrigadierGeneral Porter, should be known as the Fifth Corps.
  • June 28,1865.-Discontinued.

    Sixth Army Corps

  • July 22, 1862.-The President directed that the corps arranged in G. O. No. 125, Headquarters Army of the Potomac, of the forces commanded by Brigadier. General Franklin, should be known as the Sixth Army Corps.
  • June 28, 1865.-Discontinued,

    Seventh Army Corps

  • July 22, 1862.-The President directed that the forces under Major-General Dix should constitute the Seventh Corps. August 1, 1863.-Discontinued, and the troops transferred to the Eighteenth Corps. January 6, 1864.-The troops in the Department of Arkansas to constitute thia corps, commanded by Major-General Steele.
  • August 1, 1865.-Discontinued.

    Eighth Army Corps

  • July 22, 1862.-The President directed that the forces under Major-General Wool should constitute the Eighth Corps. March 12,1863.-Major-General Lewis Wallace, commanding Middle Department, assigned to command.
  • July 11, 1864.-Major-General E. 0. C Ord assigned to command of the corps, and of all the troops in the Middle Department. July 28, 1864.-Major-General Wallace resumed command of the corps, and all the other troops in the Middle Department.
  • August 1,1865.-Discontinued.

    Ninth Army Corps

  • July 22, 1862.-The President directed that the troops under Major-General Burnside, and belonging to the Department of North Carolina, should be known as the Ninth Corps.
  • July 27, 1865.-Discontinued.

    Tenth Army Corps

  • September 3,1862.-It was ordered that the forces in the Department of the South should constitute the Tenth Army Corps, to be commanded by MajorGeneral 0. M. Mitchell.
  • December 3, 1864.-Discontinued.
  • March 27, 1865.-Reorganized of all troops in the North Carolina not belonging (to the Second, Ninth, and Twenty-third Corps and General Sherman's army, with Major-General A. H. Terry in command.
  • August 1, 1865.-Discontinued.

    Eleventh Army Corps

  • September 12, 1862.-The troops of the Shenandoah Department, commanded by Major-General Banks, were constituted this corps.
  • April 4,1864.-Consolidated with the Twelfth, and constituted the Twentieth Corps.

    Twelfth Army Corps

  • September 12, 1862.-The troops under General McDowell, with some exceptions, were constituted this corps. April 4,1864.-Consolidated with the Eleventh, and constituted the Twentieth Corps.

    Thirteenth Army Corps

  • October 24, 1862.-The troops under command of Major-General Grant, commanding Department of the Tennessee, were to constitute this corps.
  • December 18, 1862.-Major-General J. A. McClernand assigned to the command of the Thirteenth Corps, and the forces under General Grant organized into the Thirteenth, Fifteenth, Sixteenth, and Seventeenth Corps.
  • June 11, 1864.-Temporarily discontinued, and troops transferred.
  • February 18, 1865.-Reorganized, and Major-General Gordon Granger placed in command.
  • July 20,1865.-Discontinued. No badge adopted.

    Fourteenth Army Corps

  • October 24, 1862.-The troops under Major-General Rosecrans, commanding the Department of the Cumberland, were ordered to constitute this corps.
  • January 9,1863.-This corps divided into three corps; the Fourteenth, Twentieth, and Twenty-0rst; the Fourteenth to be commanded by Major-General G. H. Thomas.
  • August 1, 1865.-Discontinued,

    Fifteenth Army Corps

  • Constituted December 18,1862, from troops of General Grant's command, and Major-General W. T. Sherman assigned to its command.
  • August 1, 1865.-Discontinued.

    Sixteenth Army Corps

  • Constituted December 18, 1862, from troops of General Grant,s command, and Major-General S. A. Hurlbut assigned to its command.
  • November 7,1864.-The Corps organization abolished.
  • February 18, 1865.- Reorganized, and Major-General A. J. Smith in command.
  • July 20,1865.-Discontinued.

    Seventeenth Army Corps

  • Constituted December 18, 1862, from troops of General Grant,s command, and Major-General J. B. McPherson assigned to command.
  • August 1, 1865.-Discontinued.

    Eighteenth Army Corps

  • December 24, 1862.-The President ordered that the troops in North Carolina should constitute the Eighteenth Army Corps, and assigned Major-General J. G. Foster to the command.
  • August 1, 1863.-The Seventh Army Corps transferred to this corps.
  • July 17,1864.-Tho troops of the Department of North Carolina and Virginia serving with the Army of the Potomac in the field, to constitute this corps, and Major-General William F. Smith assigned to command.
  • December 3, 1864.-Discontinued.

    Nineteenth Army Corps

  • January 5, 1863.-Ordered that the troops in the Department of the Gulf shall constitute this corps, to be commanded by Major-General N. P. Banks.
  • July 11, 1864.- Major-General Gilmore assigned to temporary command of ths part of the corps in the Department of Washington. July 13,1864.-Brigadier-General W. H. Emory placed in command of tnis portion of the corps.
  • November 7, 1864.-Brevet Major-General Emory appointed to command; headquarters with the army of Sheridan, in the field. The organization in the Military Division of West Mississippi known as the Nineteenth. Corps, abolished.
  • March 20, 1865.-Discontinued.

    Twentieth Army Corps

  • January 9, 1863.-The Army of the Cumberland divided into three corps: ths Fourteenth, Twentieth, and Twenty-flrst. The Twentieth to be commanded by Major-General A. McD. McCook. September 28, 1863.-Consolidated with the Twenty-0rst, and constituted the Fourth Corps.
  • April 4, 1864.-Re-formed of the Eleventh and Twelfth Corps by consolidation, and Major-General J. Hooker placed in command. June 1,1866.-Discontinued.

    Twenty-first Army Corps

  • January 9, 1863.-The Army of the Cumberland, divided into three corps, the Fourteenth, Twentieth, and Twenty-first; the latter to be commanded by Major-General T. L. Crittenden.
  • September 28,1863.-Consolidated with the Twentieth, and constituted the Fourth Corps.
  • No badge adopted.

    Twenty-second Army Corps

  • February 2,1863.-The troops in the Department of Washington to constitute this Corps, under command of Major-General Heintzelman.

    Twenty-third Army Corps

  • April 27, 1863.-The troops in Kentucky, not belonging to the Ninth Corps, were constituted the Twenty-third Corps, commanded by Major-General G. L. Hartsuff ; by Major-General Stoneman, from Jan. 28,1864; by Major-Gen. Schofleld, from April 4, 1864; by Maj.-Gen, J. D. Cox, from Mar. 27, 1865.



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