United States Regiments & Batteries > Ohio > 75th Ohio Infantry Regiment
The 75th Ohio Infantry Regiment lost 4 officers and 110 enlisted men killed or mortally wounded and 2 officers and 101 enlisted men to disease during the Civil War. It is honored by two monuments at Gettysburg shared with the 25th Ohio Infantry.
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1861
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| November 7 | Organization of the 75th Ohio Infantry Regiment begun at Camp McLain, Cincinnati, Ohio under the command of Colonel Nathaniel C. McLean, Lt. Colonel R.A. Constable and Major Robert Reily. |
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1862
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| January 8 | Organization completed |
| January 28 | The 75th Ohio Infantry Regiment left the state for Grafton, Va. Attached to Milroy’s Command, Cheat Mountain, District West Virginia |
| February 17-March 1 | March to Huttonville and attached to Milroy’s Brigade, Dept. of the Mountains |
| April 1-12 | Expedition to Lost River Region attached to Schenck’s Brigade, Dept. of the Mountains |
| April 12 | Action at Monterey |
| May 8 |
Battle of McDowellThe Regiment lost 87 men |
| May 10-12 | Retreat to Franklin |
| May 29 | Franklin |
| June 1-2 | Pursuit of Jackson to Shenandoah Valley, Strasburg and Staunton Road |
| June 3 | Mt. Jackson |
| June 4 | New Market |
| June 6 | Harrisonburg |
| June 8 |
Battle of Cross Keys |
| June 26 | At Middletown, attached to 2nd Brigade, 1st Division, 1st Corps, Army of Virginia. Colonel McLean was given command of the brigade |
| July 7 | At Sperryville |
| July 16-19 | Reconnaissance to Madison Court House |
| August 9 |
Battle of Cedar Mountain |
| August 16-September 2 |
Pope’s Campaign in Northern Virginia |
| August 22 | Freeman’s Ford |
| August 29-30 |
Second Battle of Bull Run (Manassas)The Regiment lost 113 men. The colors were riddled with over 90 holes. |
| September-December | Duty in the Defenses of Washington, D.C. attached to 2nd Brigade, 1st Division, 11th Army Corps, Army of the Potomac |
| September 25-28 | Expedition from Centreville to Bristoe Station and Warrenton Junction |
| November 29 | Colonel Nathaniel C. McLean promoted to brigadier general |
| December 3 | Lt. Colonel R.A. Constable promoted to colonel and Major Reily to lieutenant colonel |
| December 10-15 | March to Fredericksburg, Va. |
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1863
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| January 12 | Colonel Constable resigned |
| January 20-24 |
“Mud March” |
| February-April | At Falmouth |
| February 26 | Woodstock and Cedar Run |
| March 3 | Lieutenant Colonel Reily promoted to colonel |
| April 27-May 6 |
Chancellorsville Campaign |
| May 1-5 |
Battle of ChancellorsvilleThe Regiment in a half hour lost 150 casualties, including Colonel Reily, who was was mortally wounded. |
| May 22 | Andrew L. Harris promoted to colonel |
| June 11-July 24 |
Gettysburg Campaign |
| July 1-3 |
Battle of GettysburgThe 75th Ohio was commanded at Gettysburg by Colonel Andrew L. Harris, who took command of the brigade on July 1. Captain George B. Fox then took over the regiment. The Regiment lost 16 killed 16, 96 wounded 96, and 71 missing, a total of 183. From the monument: Arriving at Gettysburg from Emmitsburg July 1, 1863, The 25th and 75th Ohio Infantry advanced beyond the town and, under a heavy cannonade, took position here, supporting Battery G, 4th U.S. Artillery. During July 2 and 3, they held an advanced line on East Cemetery Hill, and early July 4 led the advance into the town. < See Colonel Harris’s Official Report on the 75th Ohio at Gettysburg > |
| July 5-24 | Pursuit of Lee |
| August 6-12 | Moved to Morris Island, S.C. and attached to 2nd Brigade, Gordon’s Division, Folly Island, S.C., 10th Army Corps, Dept. of the South |
| August 18-September 7 | Siege operations against Fort Wagner, Morris Island, S.C., and against Fort Sumpter and Charleston |
| September 7 | Capture of Fort Wagner and Gregg, Morris Island |
| September | Moved to Folly Island, S.C. |
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1864
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| February 6-14 |
Expedition to John’s and James’ islands |
| February 22 | Ordered to Jacksonville, Fla. Regiment mounted and attached to 1st Brigade, Ames’ Division, District of Florida |
| April 2 | Expedition from Jacksonville to Cedar Creek; Cedar Run |
| April 25-May 10 | Expedition to Headwaters of the St. Johns and Kissinee Rivers, destroying and capturing a large amount of stores and property. Attached to District of Florida, Dept. of the South |
| April 28 | Action near Jacksonville |
| May 25 | Near Camp Finnegan |
| May 31-June 3 | Expedition from Jacksonville to Camp Milton |
| July 3 | King’s Creek, S.C. (Detachment) |
| July 23-28 | Raid from Jacksonville to Baldwin |
| July 25 | Near Trail Ridge |
| July 26 | Action at St. Mary’s Trestle |
| August 12 | Camp Baldwin |
| August 15-19 | Raid on Florida Railroad |
| August 17 | Gainesville |
| September 28 | Expedition to Enterprise |
| October – November, | Companies A, B, C, D, F and G mustered out. Remaining companies attached to 4th Separate Brigade, Dept. of the South |
| December 8-10 | Companies E, H, I and K moved to Hilton Head, S.C. and attached to 1st Brigade, Coast Division, Dept. of the South |
| December 29 | Pocotaligo Bridge, S.C. |
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1865
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| January | Returned to Florida and duty at District Headquarters, Jacksonville, and at Tallahatchie, Fla. attached to 4th Separate Brigade, Dept. of the South |
| July 15 | The 75th Ohio Infantry Regiment mustered out |