The 6th Ohio Cavalry Regiment lost 5 officers and 52 enlisted men killed and mortally wounded and 4 officers and 177 enlisted men to disease during the Civil War. It is honored by a monument at Gettysburg, even though it was not in the battle itself.

1861
October 7 Organized at Warren, Ohio and duty there
1862
January At Camps Chase and Dennison, Ohio
May 13 Moved to Wheeling, W. Va.
June 1 To Strasburg, Va. Attached to Fremont’s Mountain Department
June 2 Woodstock
June 4 Mr. Jackson
June 5 New Market
June 6 Harrisonburg
June 8 Battle of Cross Keys
June 16 Near Mt. Jackson
June Attached to the 2nd Brigade, 2nd Division, 1st Corps, Pope’s Army of Virginia
July Attached to Cavalry Brigade, 1st Corps, Army of Virginia
August 3-4 and 12 Rapidan River
August 16-September 2 Pope’s Campaign in Northern Virginia
August 16-23 Fords of the Rappahannock
August 21 Kelly’s Ford
August 21-22 Catlett’s Station
August 23 Fant’s Ford, Great Run
August 28 Thoroughfare Gap and Haymarket
August 29-30 Second Battle of Bull Run
September Attached to Cavalry Brigade, 11th Army Corps, Army of the Potomac
September 25-28 Expedition from Centreville to Bristoe and Warrenton Stations
October 12 Reconnaissance to near Warrenton
October 17-18 Thoroughfare Gap
October 19 Haymarket (Detachment)
November 10-12 Operations on Orange & Alexandria Railroad
November 28-30 Reconnaissance from Chantilly to Snicker’s Ferry and Berryville
November 30 Berryville
December 12-15 Battle of Fredericksburg, Va. (Detachment)
December 22 Scout to Luray Valley
1863
February Attached to 1st Brigade, 2nd Division, Cavalry Corps, Army Potomac
March 17 Kelly’s Ford
April 27-May 8 Stoneman’s Raid
June Attached to 2nd Brigade, 2nd Division, Cavalry Corps, Army Potomac
June 9
Battle of Brandy Station

Commanded by Major William Stedman.

June 17 Aldie
June 19 Middleburg
June 21 Upperville
July 1-3
Battle of Gettysburg

The regiment was commanded by Major William Stedman. It consisted of 391 men in ten companies (A-E, G-I, and K-L) and did not participate in the battle, as it was on detached duty guarding trains at Westminster.

From the monument: 

The Sixth Ohio Cavalry served during the Gettysburg Campaign with Huey’s Brigade, taking part in several severe engagements. During the battle of Gettysburg, it was on detached service with the brigade at Manchester, Md.

July 4 Monterey
July 6 Smithburg
July 6-7 Williamsport and Hagerstown
July 8 Boonsboro
July 10 and 13 Jones’ Cross Roads near Williamsport
July 11-13 Hagerstown
July 14 Falling Waters
July 15 Jones’ Cross Roads
August Attached to 1st Brigade, 2nd Division, Cavalry Corps, Army Potomac
September 1 Barber’s Cross Roads
September 10-11 Scout to Middleburg
September 13-17 Advance from the Rapidan to the Rappahannock
September 13 Culpeper Court House
September 15 Rapidan Station
October 9-22 Bristoe Campaign
October 12-13 Warrenton or White Sulphur Springs
October 14 Auburn Bristoe and Bristoe
November 7-8 Advance to line of the Rappahannock
November 26-December 2 Mine Run Campaign
November 27 New Hope Church
1864
January 1-4 Reconnaissance to Front Royal
February 28-March 1 Custer’s Raid into Albemarle County
February 29 Near Charlottesville
March 1 Stannardsville
March 1 Burton’s Ford, Rapidan River (Detachment)
May 3-June 15 Rapidan Campaign
May 5-6 Todd’s Tavern
May 6-7 Wilderness
May 7-8 Todd’s Tavern
May 8 Corbin’s Bridge
May 9-24 Sheridan’s Raid to the James River
May 9 Childsburg and Davenport
May 9-10 North Anna
May 11 Ashland, Ground Squirrel Church and Yellow Tavern
May 12 Brook’s Church or fortifications of Richmond
May 26-28 On line of the Pamunkey
May 28 Haw’s Shop
May 28-31 Totopotomoy
May 31-June 7 Cold Harbor
June 2 Sumner’s Upper Bridge
June 7-24 Sheridan’s Trevillian Raid
June 11-12 Trevillian Station
June 12 Mallory’s Cross Roads
June 21 Black Creek or Tunstall Station and St. Peter’s Church, White House
June 24 St. Mary’s Church
June 24 Siege operations against Petersburg and Richmond begin
July 12 Warwick Swamp
July 12 Poolesville, Md. (Detachment.)
July 27-29 Demonstration north of the James
July 27-28 Deep Bottom and Malvern Hill
July 30 Lee’s Mills
August 13-20 Demonstration north of the James
August 14-18 Strawberry Plains, Deep Bottom
August 20-21 Six Mile House, Weldon Railroad
August 23 Dinwiddie Road near Ream’s Station
August 25 Ream’s Station
September 29-October 2 Arthur’s Swamp and Poplar Grove Church
October 16-19 Expedition into Surrey County. Atached to 3rd Brigade, 2nd Division, Cavalry Corps, Army Potomac
October 27-28 Boydton Plank Road, Hatcher’s Run
December 1 Stony Creek Station
December 8-10 Reconnaissance to Hatcher’s Run and skirmishes
1865
February 5-7 Dabney’s Mills, Hatcher’s Run
March 28-April 9 Appomattox Campaign
March 30-31 Dinwiddie Court House
April 1 Five Forks
April 5 Amelia Springs and Jettersville
April 6 Sailor’s Creek
April 7 Farmville
April 9 Appomattox Court House. Surrender of Lee and his army.
April 23-29 Expedition to Danville. Duty in Sub-District of the Appomattox, Dept. of Virginia
August 7 Mustered out