The following timeline is from “The History of the Seventy-Ninth Indiana Regiment – Indiana Volunteer Infantry in the Civil War of Eighteen Sixty-One” published The by Hollenbeck Press in Indianapolis, Indiana. 1899.
27th Fred Knefler appointed colonel of regiment. Six companies left Indianapolis at 2A.M.
28th Arrived at Jeffersonville at 12m, Lieutenant-Colonel S.P. Oyler in command. Crossed river to Louisville, Ky. Camped near L. & N. R.R depot.
29th In camp at Louisville, Ky. Drilling, etc.
30th Part of the regiment at Louisville at 2 AM. Was ordered to be ready to march. Marched at 5 A.M. a short distance and was ordered back to camp.
1st In camp near Louisville. Drilling and routine duties.
2nd Colonel Knefler at Indianapolis mustered into service of United States. Part of regiment in camp. Drilling, etc.
3rd Marched at 7 A.M. without striking camp. Marched to camp three miles from fair grounds..
4th Marched toward Shelbyville about twelve miles. Camped on the side of a hill. Regiment assigned to provisional brigade, General Sill commanding.
5th At 4 A.M. received orders to march to cover troops retreating from Richmond. The regiment fell in the rear of passing troops and covered the retreat.
6th – 7th – 8th In camp. Routine Duties
9th Formed in line. Tents struck. Wagons loaded. Marched at 6 A.M. to Louisville. Lay in the streets in the hottest time of day. Many of the boys became overheated and were prostrated. Orders were received to return to the old camp, arriving there at about 4 P.M. Put up tents again.
10th – through the 14th. In camp. Routine Duties
15th – Awakened early to be ready to move. Marched at 6 A.M. to Louisville. Seventy-ninth in front. Lay in Broadway two or three hours in scorching sun. Many prostrated from heat. Several sent to hospital in ambulances. Marched southeast of city about two miles and pitched camp in a delightful, shady place.
16th through September 22nd – In Camp. Routine Duties.
September 23rd Ordered to march. Struck tents. Left camp about 6 A.M. Marched to Louisville. Great excitement. Women and children leaving city by hundreds, by order of General Nelson. Bragg is expected to attack the city. Regiment marched south of the city about one mile, where trenches had been dug, and manned the trenches.
By this time David J. Marvel had been taken to the hospital in Louisville and Indiana.
The following information is from Wikipedia: 79th Regiment Indiana Infantry
The 79th Indiana Infantry was organized at Indianapolis, Indiana from August 20 through September 2, 1862 and mustered in for a three year enlistment on September 2, 1862 under the command of Colonel Frederick Knefler.
Moved to Louisville, Ky. Pursuit of Bragg to London, Ky., October 1–22, 1862. Battle of Perryville, Ky., October 8 (reserve). March to Nashville, Tenn., October 22-November 7, and duty there until December 26. Advance on Murfreesboro, Tenn., December 26–30. Battle of Stones River December 30–31, 1862 and January 1–3, 1863. Duty at Murfreesboro until June. Tullahoma Campaign June 23-July 7. Occupation of middle Tennessee until August 16. Passage of the Cumberland Mountains and Tennessee River and Chickamauga Campaign August 16-September 22. Battle of Chickamauga September 19–20. Siege of Chattanooga, September 24-November 23. Chattanooga-Ringgold Campaign November 23–27. Orchard Knob November 23–24. Missionary Ridge November 25. Pursuit to Graysville November 26–27. March to relief of Knoxville, Tenn., November 28-December 8. Operations in eastern Tennessee December 1863 to April 1864.