| 1864-02-01 00:00:00 | February 1 | President Lincoln calls for 500,000 more troops. |
| 1864-02-08 00:00:00 | February 8 | William Gregg, late Major in the 23rd New York Volunteers, authorized by the Secretary of War to raise an infantry regiment in Western New York. |
| 1864-04-27 00:00:00 | April 27 | Companies A and B leave Elmira for Washington, D.C. by way of New York and Philadelphia. |
| 1864-04-29 00:00:00 | April 29 | Company C leaves Elmira for Washington, D.C. by way of Harrisburg, meeting up with Companies A and B in Baltimore. |
| 1864-05-01 12:00:00 | May 1-2 | 179th at Soldiers Rest in Washington, D.C. |
| 1864-05-03 00:00:00 | May 3 | Companies A, B, and C arrive at Arlington Heights in Virginia in the vicinity of Fort Runyon and Fort Albany |
| 1864-05-06 00:00:00 | May 16 | Company D arrives at Arlington Heights. |
| 1864-05-20 00:00:00 | May 20 | Company E arrives at Arlington Heights, having left Elmira on May 18. |
| 1864-05-22 00:00:00 | May 22 | Lt. Col. Franklin B. Doty arrives at Arlington Heights and takes command. |
| 1864-05-30 00:00:00 | May 30 | Companies A, B, C, D and E embark from Alexandria, Virginia on the John Brooks and arrive at White House Landing, Virginia on the Pamunkey River on June 3. |
| 1864-06-05 00:00:00 | June 5 | Company F and Major J. Barnett Sloan arrive at White House Landing, having left Elmira on June 1. |
| 1864-06-06 00:00:00 | June 6 - 22 | A detachment of approximately 100 men, primarily from Companies A, C and D, under Capt. Terrill occupies Union position at Cumberland Point on the Pamunkey River. |
| 1864-06-11 00:00:00 | June 11 | 179th “Battalion” assigned to Ninth Corps – Second Brigade of First Division — at Cold Harbor. |
| 1864-06-12 00:00:00 | June 12 | 179th receives first hostile fire. |
| 1864-06-12 01:00:00 | June 12 | The Fourth and Tenth U.S. Infantry, in accordance with telegram from headquarters Army of the Potomac, were transferred to the Fifth Corps. On the evening of the same day the division left the intrenchments near Cold Harbor and march all night. |
| 1864-06-12 01:00:00 | June 12 - 16 | 179th participates in the Army of the Potomac’s change of front from Cold Harbor to Petersburg. |
| 1864-06-13 02:00:00 | June 13 | Marched to New Kent Court-House. |
| 1864-06-13 06:00:00 | June 13 | Arrived at Tunstall's Station at daybreak; started again at 11 a.m., and halted for the night near Jones' Bridge, over the Chickahominy. |
| 1864-06-13 11:00:00 | June 13 | Moved at 11 am; crossed the Chickahominy at Jones' Bridge and halted for the night. The Fourth Division marched to New Kent Court-House. (OR XL:LII 194) |
| 1864-06-14 01:00:00 | June 14 | Marched to James River; encamped about two miles below the pontoon bridge, and remained there until the night of the 15th. |
| 1864-06-14 02:00:00 | June 14 | Marched to and beyond Slatersville. |
| 1864-06-14 06:00:00 | June 14 | Marched to James River and encamped near Wilcox's Landing; Fourth Division marched beyond Slatersville. |
| 1864-06-15 03:00:00 | June 15 | Crossed James River at Wind Hill Point on pontoon bridge. Ordered to Petersburg to support of Eighteenth Corps. |
| 1864-06-15 03:00:00 | June 15 | Marched to Chickahominy River. |
| 1864-06-15 06:00:00 | June 15 | Crossed the James River at night, and moved in the direction of Petersburg. Arrived in front of the latter place at 6 p.m. [16th]. The Fourth Division marched to the Chickahominy River. |
| 1864-06-15 20:00:00 | June 15 | Soon after dark started and marched all night and until 6 p.m. the next day, arriving in front of Petersburg. |
| 1864-06-15 20:00:00 | June 15 | Moved at dark and crossed James River about midnight. |
| 1864-06-16 02:00:00 | June 16 | Fourth Division crossed the Chickahominy; marched to the James River and encamped. |
| 1864-06-16 03:00:00 | June 16 | Crossed Chickahominy River; marched to and encamped on the James River. |
| 1864-06-16 12:00:00 | June 16 | Reached position near Petersburg; division held in support of Barlow's division, Sixth [Second] Corps, in attack on enemy's lines at 6 p.m.; two brigades slightly engaged. |
| 1864-06-17 01:00:00 | June 17 | 179th participates in First Division’s assault on the Confederate Hagood Line near Shand’s Farm. |
| 1864-06-17 03:00:00 | June 17 | Attacked the enemy in front of Petersburg. The Second Division made an attack at 3 a.m. and carried the enemy's position, capturing 4 guns, 3 stand of colors, and several hundred prisoners.
The Fourth Division crossed the James River. |
| 1864-06-17 03:00:00 | June 17 | Division attacked at 3 a.m. with bayonet; carried enemy's position, capturing 4 guns, 3 colors, and several hundred prisoners; loss slight. |
| 1864-06-17 03:00:00 | June 17 | Crossed the James River. |
| 1864-06-17 05:00:00 | June 17 | Advanced at daybreak in support of the Second Division. This division not engaged until late in the p.m., when they charged, with severe loss, and took a line of works interior to those captured by General Potter, but in the night were obliged to leave th |
| 1864-06-18 00:00:00 | June 18 | 179th reassigned to First Brigade, First Division, Ninth Corps. |
| 1864-06-18 01:00:00 | June 18 | Attacked the enemy and gained a position across the Petersburg and Norfolk Railroad. Loss in Third Division quite severe.
The Fourth Division arrived at the front. |
| 1864-06-18 03:00:00 | June 18 | Marched to the front. |
| 1864-06-19 01:00:00 | June 19 | Engaged in intrenching and strengthening position. |
| 1864-06-19 04:00:00 | June 19 | Rejoined the Ninth Corps. |
| 1864-06-20 04:00:00 | June 20 | Relieved Second Corps in the second line of intrenchments. |
| 1864-06-23 04:00:00 | June 23 | Relieved by part of Tenth Corps, and took position in rear of Second Division, Ninth Army Corps. |
| 1864-06-27 04:00:00 | June 27 | Marched to Prince George Court-House. |
| 1864-06-30 00:00:00 | June 30 | Hold about the same position as on the 19th, since which time the troops have been engaged in skirmishing and strengthening line of works. |
| 1864-06-30 04:00:00 | June 30 | Took up position on left of army, relieving the Sixth Corps. |
| 1864-07-02 00:00:00 | July 2 | Left camp on Jerusalem plank road and marched nine miles, taking up position on Norfolk Road. |
| 1864-07-09 00:00:00 | July 9 | Moved to extreme left of line beyond Jerusalem plank road. |
| 1864-07-12 00:00:00 | July 12 | Moved near Norfolk road. |
| 1864-07-21 00:00:00 | July 21 | 179th assigned back to Second Brigade. |
| 1864-07-29 00:00:00 | July 29 | Company G arrives in the Petersburg positions. This was originally Company A of the 180th New York Volunteers which failed to organize. |
| 1864-07-30 04:44:00 | July 30 | Mine explosion at 4:44 a.m. |
| 1864-07-30 05:00:00 | July 30 | In the first wave of the charge on the enemy's works; fought two to three hours; were repulsed and lost heavily. |
| 1864-08-19 00:00:00 | August 19 | 179th participates in the Union offensive against the Weldon Railroad. |
| 1864-09-05 00:00:00 | September 18 | Company H and Company I arrive in the field, having left Elmira on September 13. |
| 1864-09-07 00:00:00 | September 20 | Company K arrives in the field, having left Elmira on September 16. |
| 1864-09-29 00:00:00 | September 30 - October 2 | 179th participates in the Battle of Poplar Spring Church. |
| 1864-10-08 00:00:00 | October 8 | Col. Gregg joins the 179th in the field |
| 1864-10-13 00:00:00 | October 13 | 179th presented with its regimental colors. |
| 1864-10-27 00:00:00 | October 27 | 179th participates in the Battle of Hatchers Run. |
| 1864-11-08 00:00:00 | November 8 | Election Day |
| 1864-12-07 00:00:00 | December 7 | Warren’s Raid on the Weldon Railroad |
| 1865-03-25 00:00:00 | March 25 | Confederate attack on Fort Steadman -- 179th fell out, but not deployed. |
| 1865-04-01 00:00:00 | April 1 | 179th attacks Confederate lines near Fort Mahone |
| 1865-04-02 00:00:00 | April 2 | 179th enters Petersburg |
| 1865-04-08 00:00:00 | April 8 | 179th arrives in Burkeville, Virginia. |
| 1865-04-10 00:00:00 | April 10 | 179th learns of Lee’s surrender the day before. |
| 1865-04-16 00:00:00 | April 16 | 179th learns of President Lincoln’s assassination two days before. |
| 1865-04-27 00:00:00 | April 27 | 179th arrives back at Alexandria. |
| 1865-05-23 00:00:00 | May 23 | 179th marches in the Grand Review in Washington, D.C. |
| 1865-05-29 00:00:00 | May 29 | New York Gov. Reuben Fenton visits the 179th in camp. |
| 1865-06-08 00:00:00 | June 8 | 179th mustered out in Alexandria and departs for Elmira. |
| 1865-06-11 04:00:00 | June 11 | 179th arrives in Elmira at 4 A.M. |
| 1865-06-12 00:00:00 | June 12 | Elmira’s celebration for the 179th. |
| 1865-06-21 00:00:00 | June 21 | Soldiers of the 179th are paid and depart for home. |