| Page | From Date | To Date | Events | 
| Cover |  |  | Inside pre-printed cover page of diary | 
| 2 | September 20, 1861 | November 26, 1861 | Formation of regiment; Camp Tiffin near Wooster, OH | 
| 3 | November 27, 1861 | December 18, 1861 | Drilled and equipped at Camp Dennison, OH; ordered to Lexington, KY | 
| 4 | December 19, 1861 | January 17, 1862 | March to Lexington, Nicholasville, Lancaster, Stanford, Halls Gap, KY | 
| 5 | January 18th,  1862 | January 31, 1862 | Raining in Waynesburg, march to Somerset, missed Battle of Mills Spring, KY | 
| 6 | January 31, 1862 | February 5, 1862 | Sublimity Springs on Rock Castle River, KY | 
| 7 | February 6, 1862 | February 12, 1862 | London, Flat Lick, KY | 
| 8 | February 13, 1862 | March 23, 1862 | Cumberland Ford (Pineville), KY; recon to Cumberland Gap | 
| 9 | March 28, 1862 | April 30, 1862 | Skirmishing with Rebels at Cumberland Gap; 26th Brigade formed | 
| 10 | May 22, 1862 | June 18, 1862 | Marched to via Powell's Valley, Tn via Roger's Gap, TN | 
| 11 | June 18, 1862 | July 28, 1862 | Occupied Cumberland Gap; foraging in Tazewell, TN.; returning to Powell River | 
| 12 | August 2, 1862 | August 6, 1862 | Foraging around Tazewell, attacked with 2 killed, 40 taken prisoner (where?) | 
| 13 | August 18, 1862 | September 17, 1862 | Occupation of Cumberland Gap, surrounded by Kirby Smith's army; evacuation to Manchester, KY; execution of soldier from 3d Kentucky for murder | 
| 14 | September 22 1862 | September 26, 1862 | March to Proctor, Campton, Hazel Green, KY; attacked by guerrillas | 
| 15 | September 27 1862 | October 2, 1862 | March to West Liberty and on to Grayson, KY, pursued by Rebels | 
| 16 | October 2, 1862 | October 3, 1862 | Slept with guns; Rebs fled during night; grated corn, marched to Oldtown and Greenupsburg (Greenup), KY; made cakes for remaining march | 
| 17 | October 4, 1862 | October 4, 1862 | Steamships to Wheelersburg for a waiting dinner; march on to Sciotoville, OH, camped | 
| 18 | October 5, 1862 | October 22, 1862 | Sciotoville to Hamden , back to Portland (Oak Hill), OH via railroad; 16 day camp; march to Gallipolis, OH | 
| 19 | October 23, 1862 | November 10, 1862 | Crossed into Virginia at Point Pleasant; Kanawha River, Buffalo, Red House and camped in Charleston, VA. for 10 days | 
| 20 | November 10, 1862 | November 22, 1862 | Retrace route back through Poca, Buffalo, (West) Virginia; boarded steamers on Ohio River to Cincinnati, OH, Louisville and New Albany, KY and points south | 
| 21 | November 23, 1862 | December 21, 1862 | Steamships to Cairo, Il; on Mississippi River to Columbus, KY, disembarking and into camp for 23 days at Memphis, TN, grand review by General Sherman; steamers south to Helena, AR and beyond; fired on by guerillas | 
| 22 | December 25, 1862 | December 28, 1862 | Steamers up Yazoo River; skirmishing near Chickasaw Bayou, MS; built breastworks for artillery; attacked by artillery; formed with 7th Michigan and attacked Rebel line. | 
| 23 | December 28, 1862 | December 29, 1862 | Drove enemy from woods into their stronghold; attacked Rebels in the afternoon;  Battle of Chickasaw Bayou | 
| 24 | December 29, 1862 | December 30, 1862 | Battle of Chickasaw Bayou; attack and retreat; 139 prisoners from 16th Ohio | 
| 25 | December 31, 1862 | January 10, 1863 | Flag of truce to recover dead; evacuated to Milliken's Bend then to Arkansas Post; gun boats attack Confederates | 
| 26 | January 11, 1863 | January 21, 1863 | Battle of Arkansas Post, 7000 Rebel prisoners taken; back down Mississippi River to camp at Young's Point, LA, for 45 days; repaired levee | 
| 27 | January 21, 1863 | April 12, 1863 | Camped at Young's Point; gunboats shell Vicksburg; camps at Milliken's Bend, then Richmond, La. | 
| 28 | April 13, 1863 | April 28th, 1863 | New Carthage, La; gunboats run past Vicksburg; camp at Perkins Plantation | 
| 29 | April 28, 1863 | May 1, 1863 | March to Grand Gulf, Ms.; bombardment and battle of Grand Gulf; march to Port Gibson; Battle of Port Gibson (or Thompson's Hill) | 
| 30 | May 1, 1863 | May 13, 1863 | Chasing rebels from Port Gibson; camp at Big Sandy; march to Fourteen Mile Creek then to Raymond, Ms. | 
| 31 | May 14, 1863 | May 16, 1863 | Raymond to Bolton Station to Edwards Depot. Ms; Battle of Champion Hills | 
| 32 | May 16, 1863 | May 17, 1863 | Battle of Champion Hills; pursuit of Rebels west; Battle of Big Black River | 
| 33 | May 18, 1863 | June 24, 1863 | Advance to Vicksburg; charging Confederate forts; withdraw to Big Black River Bridge and camped; moved to Bovinia Station and camped - Siege of Vicksburg | 
| 34 | June 26, 1863 | July 8, 1863 | Siege of Vicksburg; Surrender of Vicksburg; march east to Jackson, Ms. | 
| 35 | July 9, 1863 | July 24, 1863 | Siege and Surrender of Jackson, Ms.; return march to Vicksburg | 
| 36 | July 24, 1863 | September 18, 1863 | Steamers to Carrollton, La.; Grand Reviews by Gen. Banks and Grant; Steamers to Algiers, La.; train to Bayou Boeuf, march to Brashear City (Morgan City), La. | 
| 37 | September 24, 1863 | October 10, 1863 | Camp at Berwick, La.; march to Camp Brisland, Franklin, Iberia, St. Martinsburg, La; | 
| 38 | October 10, 1863 | October 30, 1863 | March to Vermillion Bayou, Carrion Crow Bayou, Opelousas and back to Iberia, La. | 
| 39 | November 4, 1863 | November 25, 1863 | Wagons to Franklin, steamers to Berwick, La.; Brashear City (Morgan City) then railroad to Algiers, La.; boarded steamship for Texas | 
| 40 | November 27, 1863 | January 13, 1864 | Pass Cavallo, Matagorda Bay, Tx.; camp at Decrows Point, Tx.; steamer to Indianola, Tx. | 
| 41 | January 19, 1864 | April 4, 1864 | camp in Indianola, Tx.; review by Gen. Ord; evacuation back to Matagorda Island; 29 men from 69th Indiana drowned | 
| 42 | April 8, 1864 | April 21, 1864 | Company C rejoins regiment; steamships to New Orleans, attacked by Confederate Gunboat Tennessee en route; camp in New Orleans | 
| 43 | April 22, 1864 | April 27, 1864 | Steamers up Mississippi River past Baton Rouge, Port Hudson, up Red River to Alexandria, La.; The Red River Campaign | 
| 44 | April 28, 1864 | May 1, 1864 | Camp and defense of Alexandria, La. | 
| 45 | May 2, 1864 | May 5, 1864 | Camp in Alexandria, La.; skirmishing with Rebels; arrival of remnants of 120th Ohio disaster | 
| 46 | May 6, 1864 | May 13, 1864 | Skirmishing around Alexandria, La.; burning and evacuation of Alexandria; Retreat from the Red River campaign | 
| 47 | May 14, 1864 | May 16, 1864 | March southeast from Alexandria, La., skirmishing; Fort DeRussy, clash at Marksville, La., Rebels in pursuit | 
| 48 | May 17, 1864 | May 19, 1864 | To Yellow Bayou; skirmishing and fighting Rebels, Battle of Yellow Bayou | 
| 49 | May 19, 1864 | May 30, 1864 | Crossed Atchafalaya River on steamer bridgeand marched to Mississippi River then south toward Baton Rouge | 
| 50 | May 30, 1864 | June 8, 1864 | Camping, skirmishing, scouting mission to Simmesport, La. | 
| 51 | June 15, 1864 | July 4, 1864 | Moved camp down river; Grand Review by Major General Reynolds;  end of diary |