The 69th New York Infantry Regiment is a completely different unit, although it shared many personnel with the 69th New York State Militia.

In April of 1862 legislation changed the designation of militia units to “National Guard.”

1861
April 23 Left State for Washington, D.C. under Colonel Michael Corcoran, Lieutenant Colonel James Haggerty and Major James Bagley
April 27 Duty at Annapolis, Md.
May 2 Moved to Washington, D.C. and stationed at Georgetown College duty in the defenses of the city.
May 9 Mustered in for three months
May 24 Advance into Virginia and occupation of Arlington Heights.
June Attached to Sherman’s Brigade, Tyler’s Division, McDowell’s Army of Northeast Virginia
July 16-21 Advance on Manassas, Va.
July 21
Battle of Bull Run

The regiment lost 38 killed, 59 wounded, and 3 officers and 92 men captured, including Colonel Corcoran, who was wounded and captured, and Lieutenant Colonel Haggerty, who was killed.

August 3 Mustered out at New York City. Many men went on to enlist in the 69th New York Regiment in the famed Irish Brigade. The regiment lost Lieutenant Colonel Haggerty and 44 enlisted men killed or mortally wounded and 6 enlisted men to disease, a total of 51.
1863
June 22 Entered United States service for thirty days and left State for Baltimore under Colonel James Bagley
June-July Duty at Baltimore, Md. Attached to 2nd Separate Brigade, 8th Army Corps, Middle Department.
July 25 Mustered out
1864
July 6 Mustered in for three months’ United States service under Colonel Bagley
July-October Duty in New York Harbor
October 6 Mustered out.