United States Regiments & Batteries > New York
The 12th New York Infantry Regiment (3 years) is a different unit that was organized in May.
In April of 1862 legislation changed the designation of militia units to “National Guard.”
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1861
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| April 21 | Sailed from New York on steamship Baltic for Fortress Monroe, Va. under Colonel Daniel Butterfield |
| April 23 | Arrived Fortress Monroe, then moved via the steamsip Goatzacoatcos to Annapolis and Washington, D.C. Assigned to Mansfield’s Command. |
| May 2 | Mustered into Federal service for three months |
| May 23 | Advanced into Virginia across the Long Bridge and to Roach’s Mills |
| May 24 | Occupation of Arlington Heights, Va. |
| June 2 | Returned to Washington |
| July 6 | Ordered to join Patterson’s Army |
| July 7 | Left Washington by rail for Hagerstown, Maryland via Baltimore and Harrisburg |
| July 9 | Marched from Hagerstown to Williamsport, forded the Potomac and continued to Martinsburg. Assigned to Third Division, 8th Brigade, Patterson’s Army. Colonel Butterfield took command of the brigade, and Lieutenent Colonel Ward took over the regiment. |
| July 12 |
Skirmish near Martinsburg |
| July 15 | Near Bunker Hill |
| July 17 | To Charlestown |
| July 21 | Marched to Harpers Ferry |
| July 26 | Four companies crossed the Shenandoah in flatboats and occupied blockhouses built by the Confederates on Loudon Heights. |
| July 28 | Evacuated Harpers Ferry and marched to Knoxville |
| August 1 | Moved to New York City |
| August 5 | Mustered out of United States Service at New York City by Lieutenant Colonel Sheppard. Colonel Butterfield would go on to become a major general. |
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1862
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| May 27 | Nine companies were ordered to Washington under the command of Colonel William G. Ward |
| June 6 | Mustered into United States service for three months and attached to 4th Brigade at Harpers Ferry |
| August 27 | Volunteered to extend its terms of service |
| September 12-15 |
Defense of Harper’s Ferry |
| September 12-13 |
Maryland Heights |
| September 15 |
Surrender of Harper’s Ferry. |
| September 16 | Paroled as prisoners of war |
| October 12 | Mustered out |
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1863
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| January 11 | Declared exchanged |
| June 18 | Ordered to Harrisburg, Pennsylvania |
| June 20 | Mustered into United States service for thirty days under Colonel Ward and attached to General Yates’ command at Fenwick, Pennsylvania in the 1st Brigade, Dana’s Division, Department of Susquehanna |
| July 20 | Mustered out of United States service at New York City |