(II) 4th Ohio Infantry

== Regimental History and Service Record ==
Organized at Camp Dennison, Ohio, June 4, 1861. Moved to Grafton, W. Va., June 20-23. Attached to McCook's Advance Brigade, West Virginia, to July, 1861. 3rd Brigade, Army of Occupation, West Virginia, to November, 1861. Kelly's Command, West Virginia, to January, 1862. 2nd Brigade, Landers' Division, Army of the Potomac, to March, 1862. 1st Brigade, Shields' 2nd Division, Banks' 5th Army Corps and Dept. of the Shenandoah, to May, 1862. Kimball's Independent Brigade, Dept. of the Rappahannock, to July, 1862. Kimball's Independent Brigade, 2nd Army Corps, Army of the Potomac, to September, 1862. 1st Brigade, 3rd Division, 2nd Army Corps, to March; 1864. 3rd Brigade, 2nd Division, 2nd Army Corps, to June, 1865.
SERVICE.--
* July 6-17, 1861 - The West Virginia Campaign
Capture of Beverly July 12. Expedition to Huttonsville July 13-16. At Beverly until July 23; thence moved to New Creek. At Pendleton August 7 to October 25. Action at Petersburg September 7 and 12. Hanging Rock, Romney, September 23. Romney September 23-25. Mill Creek Mills, Romney, October 26. Duty at Romney until January, 1862. Expedition to Blue's Gap January 6-7. Blue's Gap January 7. Evacuation of Romney January 10. At Paw Paw Tunnel February 9 to March 7. Advance on Winchester March 7-15. Martinsburg March 9. Cedar Creek March 18. Strasburg March 19. 
* March 23, 1862 - Battle of Winchester, VirginiaNot referenced on Dyer summary but listed on unit homepage
Cedar Creek March 25. Woodstock April 1. Edenburg April 2. Mt. Jackson April 16. March to Fredericksburg May 12-21, and return to Front Royal May 25-30. Front Royal May 30. Battle of Port Republic June 9. Moved to Alexandria, thence to Harrison's Landing June 29-30. Haxell's, Herring Creek, July 3-4. At Harrison's Landing until August 16. 
* July 25, 1862 - Skirmish at Hagerstown, MarylandNot originally referenced on unit homepage
Movement to Fortress Monroe, thence to Centreville August 16-28. Cover Pope's retreat from Bull Run to Fairfax Court House September 1. 
* September 3-20, 1862 - The Maryland Campaign
** September 17, 1862 - Battle of Antietam, Maryland
Moved to Harper's Ferry, W. Va., September 22, and duty there until October 30. Reconnaissance to Leesburg October 1-2. March to Falmouth, Va., October 30-November 19. Battle of Fredericksburg. Va., December 12-15. At Falmouth, Va., until April 27, 1863. "Mud March" January 20-24. 
* April 27-May 6, 1863 - The Chancellorsville Campaign
** May 1-5, 1863 - Battle of Chancellorsville, Virginia
* June 11-August 1, 1863 - The Gettysburg CampaignNot originally referenced on unit homepage
** July 1-3, 1863 - Battle of Gettysburg, PennsylvaniaNot originally referenced on unit homepage
Pursuit of Lee to Manassas Gap, Va., July 5-24. On detached duty at New York City August 15 to September 16. Bristoe Campaign October 9-22. Auburn and Bristoe October 14. Advance to line of the Rappahannock November 7-8. Mine Run Campaign November 26-December 2. Robertson's Tavern or Locust Grove November 27. Mine Run November 28-30.
* Demonstration on the Rapidan February 6-7, 1864.
* Morton's Ford February 6-7.
* May 4-June 12, 1864 - The Overland Campaign
** May 5-7, 1864 - Battle of the Wilderness, Virginia
** May 8-21, 1864 - Battles of Spotsylvania Court House, Virginia
*** May 8, 1864 - Combat at Laurel Hill, Virginia
*** May 10, 1864 - Combat at Po River, Virginia
*** May 12, 1864 - Assault on the Salient at Spotsylvania Court House, Virginia
** May 22-26, 1864 - Operations on Line of the North Anna River, Virginia
** May 26-28, 1864 - Operations on Line of the Pamunkey River, Virginia
** May 28-31, 1864 - Operations on Line of the Totopotomoy River, Virginia
** June 1-12, 1864 - Battles of Cold Harbor, Virginia
Before Petersburg June 16-18. Siege of Petersburg June 16, 1864, to April 2, 1865. Old members mustered out June 21, 1864. Consolidated to a Battalion June 26, 1864. Jerusalem Plank Road, Weldon Railroad, June 22-23, 1864. Demonstration north of James River July 27-29. Deep Bottom July 27-28. Demonstration north of James River August 13-20. Strawberry Plains, Deep Bottom, August 14-18. Ream's Station August 25. Boydton Plank Road, Hatcher's Run, October 27-28. Dabney's Mills, Hatcher's Run, February 5-7, 1865. Watkins' House March 25. Appomattox Campaign March 28-April 9. Boydton and White Oak Road March 29-31. Crow's House March 31. Fall of Petersburg April 2. Sailor's Creek April 6. High Bridge and Farmville April 7. Appomattox Court House April 9. Surrender of Lee and his army. March to Washington, D.C., May 1-12. Grand Review May 23. Mustered out July 12, 1865.
== Regimental Roster ==
== Regiment Statistical Information ==
* Regiment lost during service 8 Officers and 95 Enlisted men killed and mortally wounded and 3 Officers and 155 Enlisted men by disease. Total 261.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 758, 761, 827, 905, 916, 932, 933, 934, 935, 936, 938, 939, 940, 941, 970, 1497-1498)
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