87th Illinois Infantry

== Regimental History and Service Record ==
Organized at Shawneetown, Ill., and mustered in October 3, 1862. Moved to Memphis, Tenn., January 31-February 4, 1863. Attached to District of Memphis, Tenn., 16th Army Corps, Department of the Tennessee, to March, 1863. 3rd Brigade, District of Memphis, Tenn., 5th Division, 16th Army Corps, to June, 1863. 2nd Brigade, 12th Division, 13th Army Corps, Army of the Tennessee, to July, 1863. 2nd Brigade, 3rd Division, 13th Army Corps, Dept. of the Tennessee, to August, 1863, and Department of the Gulf to September, 1863. Unattached Cavalry, Dept. of the Gulf, to November, 1863. 1st Brigade, Cavalry Division, Dept. of the Gulf, to January, 1864. 3rd Brigade, Cavalry Division, Dept. of the Gulf, to July, 1864. Cavalry Brigade, 19th Army Corps, Dept. of the Gulf, to December, 1864. Cavalry Brigade, Reserve Division, Military Division West Mississippi, to February, 1865. Cavalry District of Eastern Arkansas, 7th Army Corps, Dept. of Arkansas, to June, 1865.
SERVICE.--Duty at Memphis, Tenn., until May, 1863. Moved to Vicksburg, Miss., May 9-11. 
* May 18-July 4, 1863 - Siege of Vicksburg, Mississippi
** May 19, 1863 - Assault on Vicksburg, MississippiNot originally referenced on unit homepage for this assault
** May 22, 1863 - Assault on Vicksburg, Mississippi
** July 4, 1863 - Surrender of Vicksburg, Mississippi
Advance on Jackson, Miss., July 4-10. Siege of Jackson July 10-17. Moved to Natchez, Miss., July 25; thence to New Orleans, La., August 10. 
* October 3-November 30, 1863 - The (II) Bayou Teche Campaign 
* Regiment mounted in November. 
Washington, La., October 31. Grand Coteau November 3. Vermillionville November 11. Camp Pratt November 20. Grosse Tete Bayou February 19, 1864. 
* March 10-May 22, 1864 - The Red River Campaign
** March 14-26, 1864 - Advance from Franklin, Louisiana to Alexandria, Louisiana 
** Monett's Ferry and Cloutiersvtlle March 29-30. 
** March 31, 1864 - Skirmish at Natchitoches, Louisiana
** Wilson's Farm April 7. 
** Sabine Cross Roads April 8. 
** Pleasant Hill April 9. 
** Retreat to Alexandria April 10-26. 
** About Cloutiersville April 22-24. 
** Monett's Ferry, Cane River Crossing, April 23. 
** Occupation of Alexandria April 26-May 13. 
** Wilson's Landing May 2. 
** May 13-20, 1864 - Retreat from Alexandria, Louisiana to Morganza, Louisiana
Avoyelle, or Marksville Prairie, May 15. Mansura May 16. Yellow Bayou May 18. At Morganza, and on steamer Baltic, Marine Brigade, May to September. Scouting in Bayous between Mississippi, Atchafalaya and Red Rivers and Bayou Plaquemine. Expedition from Morganza to the Atchafalaya May 30-June 5. Livonia May 30. Near Morganza June 4. Bayou Grosse Tete June 19. Atchafalaya July 21. Scout from Morganza August 10-12, Bayou Letsworth August 11. Operations near Morganza September 16-25. Williamsport September 16. Moved to mouth of White River, Ark., September 4, and duty there until January, 1865. 3 Companies at St. Charles. Moved to Helena, Ark., and duty there until June. Scout from Helena to Madison, Ark., February 8-13. Friar's Point February 10. Skirmish near Madison February 12. Scout from Helena to Clark's Store February 24 (Detachment). Mustered out June 16, 1865.
== Regimental Roster ==
 
 
 Field and Staff Officers
 
 
 Regimental Band
 
 
 Company A
 
 
 Company B
 
 
 Company C
 
 
 Company D
 
 
 Company E
 
 
 Company F
 
 
 Company G
 
 
 Company H
 
 
 Company I
 
 
 Company K
 
 
 Unassigned
 
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== Regiment Statistical Information ==
* Regiment lost during service 1 Officer and 15 Enlisted men killed and mortally wounded and 3 Officers and 219 Enlisted men by disease. Total 238.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 749, 751, 753, 779, 1083)
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